31007252 has 12 divisors (see below), whose sum is σ = 57454740. Its totient is φ = 14591616.

The previous prime is 31007239. The next prime is 31007267. The reversal of 31007252 is 25270013.

It can be written as a sum of positive squares in 2 ways, for example, as 23367556 + 7639696 = 4834^2 + 2764^2 .

It is a super-2 number, since 2×31007252² = 1922899353183008, which contains 22 as substring.

It is a congruent number.

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, 227927 + ... + 228062.

It is an arithmetic number, because the mean of its divisors is an integer number (4787895).

Almost surely, 2^31007252 is an apocalyptic number.

It is an amenable number.

31007252 is a deficient number, since it is larger than the sum of its proper divisors (26447488).

31007252 is a wasteful number, since it uses less digits than its factorization.

31007252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456010 (or 456008 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 31007252 is about 5568.4155735721. The cubic root of 31007252 is about 314.1625593427.

Adding to 31007252 its reverse (25270013), we get a palindrome (56277265).

The spelling of 31007252 in words is "thirty-one million, seven thousand, two hundred fifty-two".