231512412 has 48 divisors (see below), whose sum is σ = 553416192. Its totient is φ = 75292800.

The previous prime is 231512399. The next prime is 231512431. The reversal of 231512412 is 214215132.

231512412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338623 + ... + 339305.

It is an arithmetic number, because the mean of its divisors is an integer number (11529504).

Almost surely, 2^231512412 is an apocalyptic number.

It is an amenable number.

231512412 is an abundant number, since it is smaller than the sum of its proper divisors (321903780).

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

231512412 is a wasteful number, since it uses less digits than its factorization.

231512412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338 (or 1336 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 231512412 is about 15215.5319328639. The cubic root of 231512412 is about 614.0325963165.

Adding to 231512412 its reverse (214215132), we get a palindrome (445727544).

The spelling of 231512412 in words is "two hundred thirty-one million, five hundred twelve thousand, four hundred twelve".