172492331 has 8 divisors (see below), whose sum is σ = 188281584. Its totient is φ = 156721120.

The previous prime is 172492321. The next prime is 172492337. The reversal of 172492331 is 133294271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172492331 - 2⁶ = 172492267 is a prime.

It is a super-2 number, since 2×172492331² = 59507208507627122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172492337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22601 + ... + 29253.

It is an arithmetic number, because the mean of its divisors is an integer number (23535198).

Almost surely, 2^172492331 is an apocalyptic number.

172492331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

172492331 is a deficient number, since it is larger than the sum of its proper divisors (15789253).

172492331 is a wasteful number, since it uses less digits than its factorization.

172492331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9021.

The product of its digits is 9072, while the sum is 32.

The square root of 172492331 is about 13133.6335794783. The cubic root of 172492331 is about 556.6598911929.

The spelling of 172492331 in words is "one hundred seventy-two million, four hundred ninety-two thousand, three hundred thirty-one".