231051256 has 8 divisors (see below), whose sum is σ = 433221120. Its totient is φ = 115525624.

The previous prime is 231051241. The next prime is 231051263. The reversal of 231051256 is 652150132.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 231051256.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 14440696 + ... + 14440711.

It is an arithmetic number, because the mean of its divisors is an integer number (54152640).

Almost surely, 2^231051256 is an apocalyptic number.

It is an amenable number.

231051256 is a deficient number, since it is larger than the sum of its proper divisors (202169864).

231051256 is a wasteful number, since it uses less digits than its factorization.

231051256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28881413 (or 28881409 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 231051256 is about 15200.3702586483. The cubic root of 231051256 is about 613.6246224538.

The spelling of 231051256 in words is "two hundred thirty-one million, fifty-one thousand, two hundred fifty-six".