31809103475 has 24 divisors (see below), whose sum is σ = 39629317728. Its totient is φ = 25327526400.

The previous prime is 31809103457. The next prime is 31809103511. The reversal of 31809103475 is 57430190813.

It is not a de Polignac number, because 31809103475 - 2²⁴ = 31792326259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5758715 + ... + 5764235.

It is an arithmetic number, because the mean of its divisors is an integer number (1651221572).

Almost surely, 2^31809103475 is an apocalyptic number.

31809103475 is a deficient number, since it is larger than the sum of its proper divisors (7820214253).

31809103475 is a wasteful number, since it uses less digits than its factorization.

31809103475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6575 (or 6570 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 31809103475 in words is "thirty-one billion, eight hundred nine million, one hundred three thousand, four hundred seventy-five".