1,236
1,236 is a composite number, even, a calendar year.
Historical context — 1236 AD
Calendar year
Year 1236 (MCCXXXVI) was a leap year starting on Tuesday of the Julian calendar.
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Year facts
- Year type
-
Leap year
Divisible by 4 and not by 100; February has 29 days.
- Days in year
- 366
- ISO weeks
- 52
- Started on
-
Tuesday
January 1, 1236
- Ended on
-
Wednesday
December 31, 1236
- Friday the 13ths
-
1
One Friday the 13th this year.
- Decade
-
1230s
1230–1239
- Century
-
13th century
1201–1300
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
790
790 years before 2026.
In other calendars
- Hebrew
-
4996 / 4997 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
633 / 634 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Fire zodiac:Monkey
Sexagenary cycle position 33 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1779 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
614 / 615 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1228 / 1229 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1158 / 1157 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 12
- Digit product
- 36
- Digital root
- 3
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 6,321
- Recamán's sequence
- a(8,516) = 1,236
- Square (n²)
- 1,527,696
- Cube (n³)
- 1,888,232,256
- Divisor count
- 12
- σ(n) — sum of divisors
- 2,912
- φ(n) — Euler's totient
- 408
- Sum of prime factors
- 110
Primality
Prime factorization: 2 2 × 3 × 103
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand two hundred thirty-six
- Ordinal
- 1236th
- Roman numeral
- MCCXXXVI
- Binary
- 10011010100
- Octal
- 2324
- Hexadecimal
- 0x4D4
- Base64
- BNQ=
- One's complement
- 64,299 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ασλϛʹ
- Mayan (base 20)
- 𝋣·𝋡·𝋰
- Chinese
- 一千二百三十六
- Chinese (financial)
- 壹仟貳佰參拾陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,236 = 9
- e — Euler's number (e)
- Digit 1,236 = 2
- φ — Golden ratio (φ)
- Digit 1,236 = 6
- √2 — Pythagoras's (√2)
- Digit 1,236 = 0
- ln 2 — Natural log of 2
- Digit 1,236 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,236 = 2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1236, here are decompositions:
- 5 + 1231 = 1236
- 7 + 1229 = 1236
- 13 + 1223 = 1236
- 19 + 1217 = 1236
- 23 + 1213 = 1236
- 43 + 1193 = 1236
- 73 + 1163 = 1236
- 83 + 1153 = 1236
Showing the first eight; more decompositions exist.
UTF-8 encoding: D3 94 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.212.
- Address
- 0.0.4.212
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.4.212
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1236 first appears in π at position 10,972 of the decimal expansion (the 10,972ordinal-suffix:nd digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.