231377533172 has 12 divisors (see below), whose sum is σ = 405029553600. Its totient is φ = 115654803576.

The previous prime is 231377533169. The next prime is 231377533223. The reversal of 231377533172 is 271335773132.

231377533172 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 3 ways as a sum of consecutive naturals, for example, 8475422 + ... + 8502677.

It is an arithmetic number, because the mean of its divisors is an integer number (33752462800).

Almost surely, 2^231377533172 is an apocalyptic number.

It is an amenable number.

231377533172 is a deficient number, since it is larger than the sum of its proper divisors (173652020428).

231377533172 is a wasteful number, since it uses less digits than its factorization.

231377533172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16981510 (or 16981508 counting only the distinct ones).

The product of its digits is 555660, while the sum is 44.

The spelling of 231377533172 in words is "two hundred thirty-one billion, three hundred seventy-seven million, five hundred thirty-three thousand, one hundred seventy-two".