31970253 has 16 divisors (see below), whose sum is σ = 50835456. Its totient is φ = 17474160.

The previous prime is 31970249. The next prime is 31970261. The reversal of 31970253 is 35207913.

It is not a de Polignac number, because 31970253 - 2² = 31970249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31970253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31970243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32613 + ... + 33578.

It is an arithmetic number, because the mean of its divisors is an integer number (3177216).

Almost surely, 2^31970253 is an apocalyptic number.

It is an amenable number.

31970253 is a deficient number, since it is larger than the sum of its proper divisors (18865203).

31970253 is a wasteful number, since it uses less digits than its factorization.

31970253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66224.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 31970253 is about 5654.2243499882. The cubic root of 31970253 is about 317.3818040216.

It can be divided in two parts, 31970 and 253, that added together give a palindrome (32223).

The spelling of 31970253 in words is "thirty-one million, nine hundred seventy thousand, two hundred fifty-three".