31425252 has 24 divisors (see below), whose sum is σ = 74256000. Its totient is φ = 10342176.

The previous prime is 31425223. The next prime is 31425287. The reversal of 31425252 is 25252413.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15627 + ... + 17522.

It is an arithmetic number, because the mean of its divisors is an integer number (3094000).

Almost surely, 2^31425252 is an apocalyptic number.

It is an amenable number.

31425252 is an abundant number, since it is smaller than the sum of its proper divisors (42830748).

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

31425252 is a wasteful number, since it uses less digits than its factorization.

31425252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33235 (or 33233 counting only the distinct ones).

The product of its digits is 2400, while the sum is 24.

The square root of 31425252 is about 5605.8230439428. The cubic root of 31425252 is about 315.5679750194.

Adding to 31425252 its reverse (25252413), we get a palindrome (56677665).

The spelling of 31425252 in words is "thirty-one million, four hundred twenty-five thousand, two hundred fifty-two".