172431 has 36 divisors (see below), whose sum is σ = 320112. Its totient is φ = 88704.

The previous prime is 172427. The next prime is 172433. The reversal of 172431 is 134271.

172431 is nontrivially palindromic in base 6.

172431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172431 - 2² = 172427 is a prime.

It is a super-2 number, since 2×172431² = 59464899522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172433) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7486 + ... + 7508.

It is an arithmetic number, because the mean of its divisors is an integer number (8892).

2¹⁷²⁴³¹ is an apocalyptic number.

172431 is a deficient number, since it is larger than the sum of its proper divisors (147681).

172431 is a wasteful number, since it uses less digits than its factorization.

172431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60 (or 50 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 172431 is about 415.2481185990. The cubic root of 172431 is about 55.6593908443.

The spelling of 172431 in words is "one hundred seventy-two thousand, four hundred thirty-one".