172375331 has 4 divisors (see below), whose sum is σ = 172416552. Its totient is φ = 172334112.

The previous prime is 172375327. The next prime is 172375337. The reversal of 172375331 is 133573271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133573271 = 13 ⋅10274867.

It is a cyclic number.

It is not a de Polignac number, because 172375331 - 2² = 172375327 is a prime.

It is a super-2 number, since 2×172375331² = 59426509474719122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172375337) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 13526 + ... + 22971.

It is an arithmetic number, because the mean of its divisors is an integer number (43104138).

Almost surely, 2^172375331 is an apocalyptic number.

172375331 is a deficient number, since it is larger than the sum of its proper divisors (41221).

172375331 is an equidigital number, since it uses as much as digits as its factorization.

172375331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41220.

The product of its digits is 13230, while the sum is 32.

The square root of 172375331 is about 13129.1786110175. The cubic root of 172375331 is about 556.5340035897.

The spelling of 172375331 in words is "one hundred seventy-two million, three hundred seventy-five thousand, three hundred thirty-one".