31423264 has 24 divisors (see below), whose sum is σ = 65121840. Its totient is φ = 14884416.

The previous prime is 31423253. The next prime is 31423291. The reversal of 31423264 is 46232413.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25234 + ... + 26449.

It is an arithmetic number, because the mean of its divisors is an integer number (2713410).

Almost surely, 2^31423264 is an apocalyptic number.

It is an amenable number.

31423264 is an abundant number, since it is smaller than the sum of its proper divisors (33698576).

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

31423264 is a wasteful number, since it uses less digits than its factorization.

31423264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51712 (or 51704 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 31423264 is about 5605.6457255164. The cubic root of 31423264 is about 315.5613204733.

Adding to 31423264 its reverse (46232413), we get a palindrome (77655677).

The spelling of 31423264 in words is "thirty-one million, four hundred twenty-three thousand, two hundred sixty-four".