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Number

133

133 is a composite number, odd, a calendar year.

Arithmetic Number Deficient Number Happy Number Harshad / Niven Octagonal Odious Number Pernicious Number Recamán's Sequence Semiprime Squarefree Year

Historical context — 133 AD

Calendar year

Year 133 (CXXXIII) was a common year starting on Wednesday of the Julian calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 · English fallback Read the full article on Wikipedia →

Notable events — 133 BC

Undated Tiberius Gracchus, the Roman reformer, is killed by a senatorial mob.

Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0

Year facts

Year type: Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
Days in year: 365
ISO weeks: 53
Long year: contains 53 ISO weeks.
Started on: Thursday
January 1, 133
Ended on: Thursday
December 31, 133
Friday the 13ths: 3
3 Friday the 13ths this year.
Decade: 130s
130–139
Century: 2nd century
101–200
Millennium: 1st millennium
1–1000
Years ago: 1,893
1893 years before 2026.

In other calendars

Hebrew: 3893 / 3894 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Water zodiac:Rooster
Sexagenary cycle position 10 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 676 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 125 / 126 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 55 / 54 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 3
Digit sum: 7
Digit product: 9
Digital root: 7
Palindrome: No
Bit width: 8 bits
Reversed: 331
Recamán's sequence: a(181,605) = 133
Square (n²): 17,689
Cube (n³): 2,352,637
Divisor count: 4
σ(n) — sum of divisors: 160
φ(n) — Euler's totient: 108
Sum of prime factors: 26

Primality

Prime factorization: 7 × 19

Nearest primes: 131 (−2) · 137 (+4)

Divisors & multiples

All divisors (4)

1 · 7 · 19 · 133

Aliquot sum (sum of proper divisors): 27

Factor pairs (a × b = 133)

1 × 133

7 × 19

First multiples

133 · 266 (double) · 399 · 532 · 665 · 798 · 931 · 1,064 · 1,197 · 1,330

Sums & aliquot sequence

As consecutive integers: 66 + 67 16 + 17 + … + 22 3 + 4 + … + 16

Aliquot sequence: 133 → 27 → 13 → 1 → 0 — terminates at zero

Representations

In words: one hundred thirty-three
Ordinal: 133rd
Roman numeral: CXXXIII
Binary: 10000101
Octal: 205
Hexadecimal: 0x85
Base64: hQ==
One's complement: 122 (8-bit)

In other bases

ternary (3) 11221

quaternary (4) 2011

quinary (5) 1013

senary (6) 341

septenary (7) 250

nonary (9) 157

undecimal (11) 111

duodecimal (12) b1

tridecimal (13) a3

tetradecimal (14) 97

pentadecimal (15) 8d

Historical numeral systems

Babylonian (base 60): 𒁹𒁹 𒌋𒁹𒁹𒁹
Egyptian hieroglyphic: 𓍢𓎆𓎆𓎆𓏺𓏺𓏺
Greek (Milesian): ρλγʹ
Mayan (base 20): 𝋦·𝋭
Chinese: 一百三十三
Chinese (financial): 壹佰參拾參

In other modern scripts

Eastern Arabic ١٣٣ Devanagari १३३ Bengali ১৩৩ Tamil ௧௩௩ Thai ๑๓๓ Tibetan ༡༣༣ Khmer ១៣៣ Lao ໑໓໓ Burmese ၁၃၃

Digit at this position in famous constants

π — Pi (π): Digit 133 = 0
e — Euler's number (e): Digit 133 = 9
φ — Golden ratio (φ): Digit 133 = 3
√2 — Pythagoras's (√2): Digit 133 = 0
ln 2 — Natural log of 2: Digit 133 = 8
γ — Euler-Mascheroni (γ): Digit 133 = 6

Also seen as

Unicode codepoint

Next Line (Nel)

U+0085

Control character (Cc)

UTF-8 encoding: C2 85 (2 bytes).

Lookup U+0085 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000085

RGB(0, 0, 133)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.133.

Address: 0.0.0.133
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.0.133

Unspecified address (0.0.0.0/8) — "this network" placeholder.