31104687 has 12 divisors (see below), whose sum is σ = 42857880. Its totient is φ = 20065680.

The previous prime is 31104649. The next prime is 31104701. The reversal of 31104687 is 78640113.

It is a happy number.

It is not a de Polignac number, because 31104687 - 2⁸ = 31104431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31104187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2512 + ... + 8277.

It is an arithmetic number, because the mean of its divisors is an integer number (3571490).

Almost surely, 2^31104687 is an apocalyptic number.

31104687 is a deficient number, since it is larger than the sum of its proper divisors (11753193).

31104687 is a wasteful number, since it uses less digits than its factorization.

31104687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10854 (or 10823 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 31104687 is about 5577.1576093921. The cubic root of 31104687 is about 314.4912826807.

The spelling of 31104687 in words is "thirty-one million, one hundred four thousand, six hundred eighty-seven".