172297542231 has 40 divisors (see below), whose sum is σ = 272656606464. Its totient is φ = 108055226880.

The previous prime is 172297542229. The next prime is 172297542251. The reversal of 172297542231 is 132245792271.

172297542231 is a `hidden beast` number, since 1 + 72 + 2 + 9 + 7 + 542 + 2 + 31 = 666.

It is not a de Polignac number, because 172297542231 - 2¹ = 172297542229 is a prime.

It is a super-2 number, since 2×172297542231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172297542251) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2877211 + ... + 2936483.

Almost surely, 2^172297542231 is an apocalyptic number.

172297542231 is a deficient number, since it is larger than the sum of its proper divisors (100359064233).

172297542231 is a wasteful number, since it uses less digits than its factorization.

172297542231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61413 (or 61404 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The spelling of 172297542231 in words is "one hundred seventy-two billion, two hundred ninety-seven million, five hundred forty-two thousand, two hundred thirty-one".