31045504 has 32 divisors (see below), whose sum is σ = 70686000. Its totient is φ = 13304832.

The previous prime is 31045493. The next prime is 31045537. The reversal of 31045504 is 40554013.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×31045504² = 1927646637228032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16429 + ... + 18220.

Almost surely, 2^31045504 is an apocalyptic number.

It is an amenable number.

31045504 is an abundant number, since it is smaller than the sum of its proper divisors (39640496).

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

31045504 is an equidigital number, since it uses as much as digits as its factorization.

31045504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34670 (or 34658 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 31045504 is about 5571.8492441917. The cubic root of 31045504 is about 314.2916948095.

Adding to 31045504 its reverse (40554013), we get a palindrome (71599517).

The spelling of 31045504 in words is "thirty-one million, forty-five thousand, five hundred four".