431520256 has 20 divisors (see below), whose sum is σ = 862198722. Its totient is φ = 215759872.

The previous prime is 431520253. The next prime is 431520263. The reversal of 431520256 is 652025134.

It can be written as a sum of positive squares in only one way, i.e., 281702656 + 149817600 = 16784^2 + 12240^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (431520253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420895 + ... + 421918.

Almost surely, 2^431520256 is an apocalyptic number.

It is an amenable number.

431520256 is a deficient number, since it is larger than the sum of its proper divisors (430678466).

431520256 is an frugal number, since it uses more digits than its factorization.

431520256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842831 (or 842815 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 431520256 is about 20773.0656379842. The cubic root of 431520256 is about 755.6726931548.

The spelling of 431520256 in words is "four hundred thirty-one million, five hundred twenty thousand, two hundred fifty-six".