31223464 has 16 divisors (see below), whose sum is σ = 58696020. Its totient is φ = 15571200.

The previous prime is 31223429. The next prime is 31223471. The reversal of 31223464 is 46432213.

It can be written as a sum of positive squares in 2 ways, for example, as 22638564 + 8584900 = 4758^2 + 2930^2 .

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, 1659 + ... + 8074.

Almost surely, 2^31223464 is an apocalyptic number.

It is an amenable number.

31223464 is a deficient number, since it is larger than the sum of its proper divisors (27472556).

31223464 is a wasteful number, since it uses less digits than its factorization.

31223464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140 (or 10136 counting only the distinct ones).

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

The square root of 31223464 is about 5587.7959876860. The cubic root of 31223464 is about 314.8910818530.

Adding to 31223464 its reverse (46432213), we get a palindrome (77655677).

The spelling of 31223464 in words is "thirty-one million, two hundred twenty-three thousand, four hundred sixty-four".