131512604 has 12 divisors (see below), whose sum is σ = 242260200. Its totient is φ = 62295408.

The previous prime is 131512567. The next prime is 131512607. The reversal of 131512604 is 406215131.

It is a self number, because there is not a number n which added to its sum of digits gives 131512604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131512607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865139 + ... + 865290.

It is an arithmetic number, because the mean of its divisors is an integer number (20188350).

Almost surely, 2^131512604 is an apocalyptic number.

It is an amenable number.

131512604 is a deficient number, since it is larger than the sum of its proper divisors (110747596).

131512604 is a wasteful number, since it uses less digits than its factorization.

131512604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730452 (or 1730450 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 131512604 is about 11467.8944885275. The cubic root of 131512604 is about 508.5368856279.

Adding to 131512604 its reverse (406215131), we get a palindrome (537727735).

The spelling of 131512604 in words is "one hundred thirty-one million, five hundred twelve thousand, six hundred four".