31057172 has 24 divisors (see below), whose sum is σ = 58611840. Its totient is φ = 14351040.

The previous prime is 31057141. The next prime is 31057183. The reversal of 31057172 is 27175013.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1868 + ... + 8099.

It is an arithmetic number, because the mean of its divisors is an integer number (2442160).

Almost surely, 2^31057172 is an apocalyptic number.

It is an amenable number.

31057172 is a deficient number, since it is larger than the sum of its proper divisors (27554668).

31057172 is a wasteful number, since it uses less digits than its factorization.

31057172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10031 (or 10029 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 31057172 is about 5572.8961949780. The cubic root of 31057172 is about 314.3310638614.

The spelling of 31057172 in words is "thirty-one million, fifty-seven thousand, one hundred seventy-two".