31142264 has 16 divisors (see below), whose sum is σ = 59096520. Its totient is φ = 15383200.

The previous prime is 31142263. The next prime is 31142297. The reversal of 31142264 is 46224113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31142263) 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, 22787 + ... + 24114.

Almost surely, 2^31142264 is an apocalyptic number.

It is an amenable number.

31142264 is a deficient number, since it is larger than the sum of its proper divisors (27954256).

31142264 is a wasteful number, since it uses less digits than its factorization.

31142264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46990 (or 46986 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 31142264 is about 5580.5254232913. The cubic root of 31142264 is about 314.6178754268.

Adding to 31142264 its reverse (46224113), we get a palindrome (77366377).

The spelling of 31142264 in words is "thirty-one million, one hundred forty-two thousand, two hundred sixty-four".