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255883131 = 357150431
BaseRepresentation
bin11110100000001…
…11011101111011
3122211111012200000
433100013131323
51011001230011
641220244043
76224653650
oct1720073573
9584435600
10255883131
11121491869
1271840623
134102244a
1425dabc27
15176e7356
hexf40777b

255883131 has 24 divisors (see below), whose sum is σ = 438057984. Its totient is φ = 146217960.

The previous prime is 255883129. The next prime is 255883141. The reversal of 255883131 is 131388552.

It is not a de Polignac number, because 255883131 - 21 = 255883129 is a prime.

It is a super-2 number, since 2×2558831312 = 130952353460726322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (255883141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73515 + ... + 76916.

It is an arithmetic number, because the mean of its divisors is an integer number (18252416).

Almost surely, 2255883131 is an apocalyptic number.

255883131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

255883131 is a deficient number, since it is larger than the sum of its proper divisors (182174853).

255883131 is an equidigital number, since it uses as much as digits as its factorization.

255883131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150453 (or 150441 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 255883131 is about 15996.3474268347. The cubic root of 255883131 is about 634.8637821354.

The spelling of 255883131 in words is "two hundred fifty-five million, eight hundred eighty-three thousand, one hundred thirty-one".

Divisors: 1 3 7 9 21 27 63 81 189 243 567 1701 150431 451293 1053017 1353879 3159051 4061637 9477153 12184911 28431459 36554733 85294377 255883131