431144256 has 28 divisors (see below), whose sum is σ = 1140736352. Its totient is φ = 143714688.

The previous prime is 431144227. The next prime is 431144267. The reversal of 431144256 is 652441134.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122580 + ... + 1122963.

It is an arithmetic number, because the mean of its divisors is an integer number (40740584).

Almost surely, 2^431144256 is an apocalyptic number.

It is an amenable number.

431144256 is an abundant number, since it is smaller than the sum of its proper divisors (709592096).

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

431144256 is a wasteful number, since it uses less digits than its factorization.

431144256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245558 (or 2245548 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 431144256 is about 20764.0134848733. The cubic root of 431144256 is about 755.4531472633.

The spelling of 431144256 in words is "four hundred thirty-one million, one hundred forty-four thousand, two hundred fifty-six".