256131088 has 10 divisors (see below), whose sum is σ = 496254014. Its totient is φ = 128065536.

The previous prime is 256131067. The next prime is 256131133. The reversal of 256131088 is 880131652.

It can be written as a sum of positive squares in only one way, i.e., 251920384 + 4210704 = 15872^2 + 2052^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8004081 + ... + 8004112.

Almost surely, 2^256131088 is an apocalyptic number.

It is an amenable number.

256131088 is a deficient number, since it is larger than the sum of its proper divisors (240122926).

256131088 is a wasteful number, since it uses less digits than its factorization.

256131088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16008201 (or 16008195 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 256131088 is about 16004.0959757182. The cubic root of 256131088 is about 635.0687821003.

It can be divided in two parts, 256 and 131088, that multiplied together give a triangular number (33558528 = T₈₁₉₂).

The spelling of 256131088 in words is "two hundred fifty-six million, one hundred thirty-one thousand, eighty-eight".