31573925 has 6 divisors (see below), whose sum is σ = 39151698. Its totient is φ = 25259120.

The previous prime is 31573859. The next prime is 31573931. The reversal of 31573925 is 52937513.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 146689 + 31427236 = 383^2 + 5606^2 .

It is not a de Polignac number, because 31573925 - 2¹⁰ = 31572901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 631454 + ... + 631503.

It is an arithmetic number, because the mean of its divisors is an integer number (6525283).

Almost surely, 2^31573925 is an apocalyptic number.

It is an amenable number.

31573925 is a deficient number, since it is larger than the sum of its proper divisors (7577773).

31573925 is a wasteful number, since it uses less digits than its factorization.

31573925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262967 (or 1262962 counting only the distinct ones).

The product of its digits is 28350, while the sum is 35.

The square root of 31573925 is about 5619.0679832157. The cubic root of 31573925 is about 316.0648434202.

The spelling of 31573925 in words is "thirty-one million, five hundred seventy-three thousand, nine hundred twenty-five".