31136894050 has 12 divisors (see below), whose sum is σ = 57914623026. Its totient is φ = 12454757600.

The previous prime is 31136894039. The next prime is 31136894083. The reversal of 31136894050 is 5049863113.

It can be written as a sum of positive squares in 3 ways, for example, as 24050116561 + 7086777489 = 155081^2 + 84183^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31136893994 and 31136894012.

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, 311368891 + ... + 311368990.

Almost surely, 2^31136894050 is an apocalyptic number.

31136894050 is a deficient number, since it is larger than the sum of its proper divisors (26777728976).

31136894050 is a wasteful number, since it uses less digits than its factorization.

31136894050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622737893 (or 622737888 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 31136894050 in words is "thirty-one billion, one hundred thirty-six million, eight hundred ninety-four thousand, fifty".