31002104 has 24 divisors (see below), whose sum is σ = 67620240. Its totient is φ = 13286448.

The previous prime is 31002089. The next prime is 31002121. The reversal of 31002104 is 40120013.

It is a happy number.

It is a super-2 number, since 2×31002104² = 1922260904853632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39152 + ... + 39935.

It is an arithmetic number, because the mean of its divisors is an integer number (2817510).

Almost surely, 2^31002104 is an apocalyptic number.

It is an amenable number.

31002104 is an abundant number, since it is smaller than the sum of its proper divisors (36618136).

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

31002104 is a wasteful number, since it uses less digits than its factorization.

31002104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79107 (or 79096 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 31002104 is about 5567.9533044019. The cubic root of 31002104 is about 314.1451720299.

Adding to 31002104 its reverse (40120013), we get a palindrome (71122117).

The spelling of 31002104 in words is "thirty-one million, two thousand, one hundred four".