612131523532 has 24 divisors (see below), whose sum is σ = 1087333968560. Its totient is φ = 301465644480.

The previous prime is 612131523529. The next prime is 612131523557. The reversal of 612131523532 is 235325131216.

612131523532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2517982 + ... + 2750362.

Almost surely, 2^612131523532 is an apocalyptic number.

It is an amenable number.

612131523532 is a deficient number, since it is larger than the sum of its proper divisors (475202445028).

612131523532 is a wasteful number, since it uses less digits than its factorization.

612131523532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242281 (or 242279 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

Adding to 612131523532 its reverse (235325131216), we get a palindrome (847456654748).

The spelling of 612131523532 in words is "six hundred twelve billion, one hundred thirty-one million, five hundred twenty-three thousand, five hundred thirty-two".