31369980154 has 12 divisors (see below), whose sum is σ = 47945586906. Its totient is φ = 15388152312.

The previous prime is 31369980149. The next prime is 31369980179. The reversal of 31369980154 is 45108996313.

It can be written as a sum of positive squares in only one way, i.e., 23971399929 + 7398580225 = 154827^2 + 86015^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31369980098 and 31369980107.

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, 1814917 + ... + 1832119.

Almost surely, 2^31369980154 is an apocalyptic number.

31369980154 is a deficient number, since it is larger than the sum of its proper divisors (16575606752).

31369980154 is an frugal number, since it uses more digits than its factorization.

31369980154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34461 (or 17258 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 31369980154 in words is "thirty-one billion, three hundred sixty-nine million, nine hundred eighty thousand, one hundred fifty-four".