231257412 has 36 divisors (see below), whose sum is σ = 586658800. Its totient is φ = 76810032.

The previous prime is 231257407. The next prime is 231257419. The reversal of 231257412 is 214752132.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (231257419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1162 + ... + 21537.

Almost surely, 2^231257412 is an apocalyptic number.

It is an amenable number.

231257412 is an abundant number, since it is smaller than the sum of its proper divisors (355401388).

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

231257412 is a wasteful number, since it uses less digits than its factorization.

231257412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22992 (or 22987 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 231257412 is about 15207.1500288516. The cubic root of 231257412 is about 613.8070708486.

The spelling of 231257412 in words is "two hundred thirty-one million, two hundred fifty-seven thousand, four hundred twelve".