31297513194 has 12 divisors (see below), whose sum is σ = 67811278626. Its totient is φ = 10432504392.

The previous prime is 31297513171. The next prime is 31297513217. The reversal of 31297513194 is 49131579213.

31297513194 is a `hidden beast` number, since 3 + 129 + 7 + 513 + 1 + 9 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (31297513171) and next prime (31297513217).

It can be written as a sum of positive squares in only one way, i.e., 17759027169 + 13538486025 = 133263^2 + 116355^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 869375349 + ... + 869375384.

Almost surely, 2^31297513194 is an apocalyptic number.

31297513194 is an abundant number, since it is smaller than the sum of its proper divisors (36513765432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31297513194 is a wasteful number, since it uses less digits than its factorization.

31297513194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738750741 (or 1738750738 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The spelling of 31297513194 in words is "thirty-one billion, two hundred ninety-seven million, five hundred thirteen thousand, one hundred ninety-four".