31253242 has 24 divisors (see below), whose sum is σ = 51455196. Its totient is φ = 14187264.

The previous prime is 31253219. The next prime is 31253267. The reversal of 31253242 is 24235213.

It can be written as a sum of positive squares in 6 ways, for example, as 28847641 + 2405601 = 5371^2 + 1551^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28048 + ... + 29140.

Almost surely, 2^31253242 is an apocalyptic number.

31253242 is a deficient number, since it is larger than the sum of its proper divisors (20201954).

31253242 is a wasteful number, since it uses less digits than its factorization.

31253242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170 (or 1141 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 31253242 is about 5590.4599095244. The cubic root of 31253242 is about 314.9911545345.

Adding to 31253242 its reverse (24235213), we get a palindrome (55488455).

The spelling of 31253242 in words is "thirty-one million, two hundred fifty-three thousand, two hundred forty-two".