256288312 has 32 divisors (see below), whose sum is σ = 568130400. Its totient is φ = 106049664.

The previous prime is 256288303. The next prime is 256288343. The reversal of 256288312 is 213882652.

256288312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 77283 + ... + 80530.

It is an arithmetic number, because the mean of its divisors is an integer number (17754075).

Almost surely, 2^256288312 is an apocalyptic number.

It is an amenable number.

256288312 is an abundant number, since it is smaller than the sum of its proper divisors (311842088).

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

256288312 is a wasteful number, since it uses less digits than its factorization.

256288312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157855 (or 157851 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 256288312 is about 16009.0072146901. The cubic root of 256288312 is about 635.1986994688.

The spelling of 256288312 in words is "two hundred fifty-six million, two hundred eighty-eight thousand, three hundred twelve".