231607172 has 6 divisors (see below), whose sum is σ = 405312558. Its totient is φ = 115803584.

The previous prime is 231607163. The next prime is 231607213. The reversal of 231607172 is 271706132.

It can be written as a sum of positive squares in only one way, i.e., 231465796 + 141376 = 15214^2 + 376^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 28950893 + ... + 28950900.

It is an arithmetic number, because the mean of its divisors is an integer number (67552093).

Almost surely, 2^231607172 is an apocalyptic number.

It is an amenable number.

231607172 is a deficient number, since it is larger than the sum of its proper divisors (173705386).

231607172 is a wasteful number, since it uses less digits than its factorization.

231607172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57901797 (or 57901795 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 231607172 is about 15218.6455376292. The cubic root of 231607172 is about 614.1163611443.

The spelling of 231607172 in words is "two hundred thirty-one million, six hundred seven thousand, one hundred seventy-two".