172331140 has 48 divisors (see below), whose sum is σ = 389088000. Its totient is φ = 63908352.

The previous prime is 172331123. The next prime is 172331171. The reversal of 172331140 is 41133271.

172331140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13036 + ... + 22684.

It is an arithmetic number, because the mean of its divisors is an integer number (8106000).

Almost surely, 2^172331140 is an apocalyptic number.

172331140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172331140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194544000).

172331140 is an abundant number, since it is smaller than the sum of its proper divisors (216756860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172331140 is a wasteful number, since it uses less digits than its factorization.

172331140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9724 (or 9722 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 172331140 is about 13127.4955722712. The cubic root of 172331140 is about 556.4864409136.

The spelling of 172331140 in words is "one hundred seventy-two million, three hundred thirty-one thousand, one hundred forty".