31104905 has 16 divisors (see below), whose sum is σ = 40960080. Its totient is φ = 22533888.

The previous prime is 31104889. The next prime is 31104961. The reversal of 31104905 is 50940113.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1478656 + 29626249 = 1216^2 + 5443^2 .

It is not a de Polignac number, because 31104905 - 2⁴ = 31104889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1070 + ... + 7959.

It is an arithmetic number, because the mean of its divisors is an integer number (2560005).

Almost surely, 2^31104905 is an apocalyptic number.

It is an amenable number.

31104905 is a deficient number, since it is larger than the sum of its proper divisors (9855175).

31104905 is a wasteful number, since it uses less digits than its factorization.

31104905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9100.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 31104905 is about 5577.1771533635. The cubic root of 31104905 is about 314.4920173925.

The spelling of 31104905 in words is "thirty-one million, one hundred four thousand, nine hundred five".