231315652 has 12 divisors (see below), whose sum is σ = 426107920. Its totient is φ = 109570536.

The previous prime is 231315613. The next prime is 231315659. The reversal of 231315652 is 256513132.

It is a self number, because there is not a number n which added to its sum of digits gives 231315652.

It is not an unprimeable number, because it can be changed into a prime (231315659) 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 3 ways as a sum of consecutive naturals, for example, 1521738 + ... + 1521889.

Almost surely, 2^231315652 is an apocalyptic number.

It is an amenable number.

231315652 is a deficient number, since it is larger than the sum of its proper divisors (194792268).

231315652 is a wasteful number, since it uses less digits than its factorization.

231315652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3043650 (or 3043648 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 231315652 is about 15209.0647970215. The cubic root of 231315652 is about 613.8585936992.

Adding to 231315652 its reverse (256513132), we get a palindrome (487828784).

The spelling of 231315652 in words is "two hundred thirty-one million, three hundred fifteen thousand, six hundred fifty-two".