31423252 has 12 divisors (see below), whose sum is σ = 62846560. Its totient is φ = 13467096.

The previous prime is 31423241. The next prime is 31423253. The reversal of 31423252 is 25232413.

31423252 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561102 + ... + 561157.

Almost surely, 2^31423252 is an apocalyptic number.

It is an amenable number.

31423252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31423252 is a wasteful number, since it uses less digits than its factorization.

31423252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122270 (or 1122268 counting only the distinct ones).

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

The square root of 31423252 is about 5605.6446551668. The cubic root of 31423252 is about 315.5612803042.

Adding to 31423252 its reverse (25232413), we get a palindrome (56655665).

It can be divided in two parts, 31423 and 252, that multiplied together give a square (7918596 = 2814²).

The spelling of 31423252 in words is "thirty-one million, four hundred twenty-three thousand, two hundred fifty-two".