31085052 has 72 divisors (see below), whose sum is σ = 78734208. Its totient is φ = 9525120.

The previous prime is 31084981. The next prime is 31085053. The reversal of 31085052 is 25058013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31085053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 463923 + ... + 463989.

Almost surely, 2^31085052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31085052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39367104).

31085052 is an abundant number, since it is smaller than the sum of its proper divisors (47649156).

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

31085052 is a wasteful number, since it uses less digits than its factorization.

31085052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 31085052 is about 5575.3970262215. The cubic root of 31085052 is about 314.4250939834.

The spelling of 31085052 in words is "thirty-one million, eighty-five thousand, fifty-two".