31008252 has 48 divisors (see below), whose sum is σ = 80244864. Its totient is φ = 9240000.

The previous prime is 31008251. The next prime is 31008269. The reversal of 31008252 is 25280013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31008251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6127 + ... + 9977.

It is an arithmetic number, because the mean of its divisors is an integer number (1671768).

Almost surely, 2^31008252 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 31008252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40122432).

31008252 is an abundant number, since it is smaller than the sum of its proper divisors (49236612).

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

31008252 is a wasteful number, since it uses less digits than its factorization.

31008252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930 (or 3928 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 31008252 is about 5568.5053649970. The cubic root of 31008252 is about 314.1659366083.

Adding to 31008252 its reverse (25280013), we get a palindrome (56288265).

The spelling of 31008252 in words is "thirty-one million, eight thousand, two hundred fifty-two".