256331311104 has 96 divisors (see below), whose sum is σ = 745509229920. Its totient is φ = 77676134400.

The previous prime is 256331311069. The next prime is 256331311121. The reversal of 256331311104 is 401113133652.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1828807 + ... + 1963974.

It is an arithmetic number, because the mean of its divisors is an integer number (7765721145).

Almost surely, 2^256331311104 is an apocalyptic number.

256331311104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

256331311104 is an abundant number, since it is smaller than the sum of its proper divisors (489177918816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256331311104 is a wasteful number, since it uses less digits than its factorization.

256331311104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792817 (or 3792797 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 256331311104 its reverse (401113133652), we get a palindrome (657444444756).

The spelling of 256331311104 in words is "two hundred fifty-six billion, three hundred thirty-one million, three hundred eleven thousand, one hundred four".