231657412 has 12 divisors (see below), whose sum is σ = 463314880. Its totient is φ = 99281736.

The previous prime is 231657409. The next prime is 231657427. The reversal of 231657412 is 214756132.

231657412 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4136712 + ... + 4136767.

Almost surely, 2^231657412 is an apocalyptic number.

It is an amenable number.

231657412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

231657412 is a wasteful number, since it uses less digits than its factorization.

231657412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8273490 (or 8273488 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 231657412 is about 15220.2960549393. The cubic root of 231657412 is about 614.1607624397.

The spelling of 231657412 in words is "two hundred thirty-one million, six hundred fifty-seven thousand, four hundred twelve".