231447856 has 10 divisors (see below), whose sum is σ = 448430252. Its totient is φ = 115723920.

The previous prime is 231447851. The next prime is 231447857. The reversal of 231447856 is 658744132.

It is a super-2 number, since 2×231447856² = 107136220093993472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231447851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7232730 + ... + 7232761.

Almost surely, 2^231447856 is an apocalyptic number.

It is an amenable number.

231447856 is a deficient number, since it is larger than the sum of its proper divisors (216982396).

231447856 is a wasteful number, since it uses less digits than its factorization.

231447856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14465499 (or 14465493 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 231447856 is about 15213.4104000385. The cubic root of 231447856 is about 613.9755177738.

The spelling of 231447856 in words is "two hundred thirty-one million, four hundred forty-seven thousand, eight hundred fifty-six".