255431132 has 12 divisors (see below), whose sum is σ = 487641336. Its totient is φ = 116105040.

The previous prime is 255431129. The next prime is 255431173. The reversal of 255431132 is 231134552.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2902583 + ... + 2902670.

It is an arithmetic number, because the mean of its divisors is an integer number (40636778).

Almost surely, 2^255431132 is an apocalyptic number.

255431132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

255431132 is a deficient number, since it is larger than the sum of its proper divisors (232210204).

255431132 is a wasteful number, since it uses less digits than its factorization.

255431132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5805268 (or 5805266 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 255431132 is about 15982.2129881941. The cubic root of 255431132 is about 634.4897481993.

Adding to 255431132 its reverse (231134552), we get a palindrome (486565684).

The spelling of 255431132 in words is "two hundred fifty-five million, four hundred thirty-one thousand, one hundred thirty-two".