31530052 has 12 divisors (see below), whose sum is σ = 55290816. Its totient is φ = 15732680.

The previous prime is 31530043. The next prime is 31530061. The reversal of 31530052 is 25003513.

It is an interprime number because it is at equal distance from previous prime (31530043) and next prime (31530061).

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, 5824 + ... + 9847.

It is an arithmetic number, because the mean of its divisors is an integer number (4607568).

Almost surely, 2^31530052 is an apocalyptic number.

It is an amenable number.

31530052 is a deficient number, since it is larger than the sum of its proper divisors (23760764).

31530052 is a wasteful number, since it uses less digits than its factorization.

31530052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16178 (or 16176 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 31530052 is about 5615.1626868685. The cubic root of 31530052 is about 315.9183814204.

Adding to 31530052 its reverse (25003513), we get a palindrome (56533565).

The spelling of 31530052 in words is "thirty-one million, five hundred thirty thousand, fifty-two".