31539052 has 12 divisors (see below), whose sum is σ = 55971216. Its totient is φ = 15547280.

The previous prime is 31539047. The next prime is 31539061. The reversal of 31539052 is 25093513.

It is a self number, because there is not a number n which added to its sum of digits gives 31539052.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55243 + ... + 55810.

It is an arithmetic number, because the mean of its divisors is an integer number (4664268).

Almost surely, 2^31539052 is an apocalyptic number.

It is an amenable number.

31539052 is a deficient number, since it is larger than the sum of its proper divisors (24432164).

31539052 is a wasteful number, since it uses less digits than its factorization.

31539052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111128 (or 111126 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 31539052 is about 5615.9640312238. The cubic root of 31539052 is about 315.9484373487.

The spelling of 31539052 in words is "thirty-one million, five hundred thirty-nine thousand, fifty-two".