31323252 has 24 divisors (see below), whose sum is σ = 73397632. Its totient is φ = 10396800.

The previous prime is 31323251. The next prime is 31323293. The reversal of 31323252 is 25232313.

It is a super-2 number, since 2×31323252² = 1962292231711008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31323251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2524 + ... + 8307.

Almost surely, 2^31323252 is an apocalyptic number.

It is an amenable number.

31323252 is an abundant number, since it is smaller than the sum of its proper divisors (42074380).

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

31323252 is a wasteful number, since it uses less digits than its factorization.

31323252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11079 (or 11077 counting only the distinct ones).

The product of its digits is 1080, while the sum is 21.

The square root of 31323252 is about 5596.7179668088. The cubic root of 31323252 is about 315.2261817215.

Adding to 31323252 its reverse (25232313), we get a palindrome (56555565).

The spelling of 31323252 in words is "thirty-one million, three hundred twenty-three thousand, two hundred fifty-two".