13431611394 has 12 divisors (see below), whose sum is σ = 29101824726. Its totient is φ = 4477203792.

The previous prime is 13431611393. The next prime is 13431611483. The reversal of 13431611394 is 49311613431.

13431611394 is a `hidden beast` number, since 1 + 3 + 4 + 3 + 1 + 611 + 39 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10037034225 + 3394577169 = 100185^2 + 58263^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13431611393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 373100299 + ... + 373100334.

Almost surely, 2^13431611394 is an apocalyptic number.

13431611394 is an abundant number, since it is smaller than the sum of its proper divisors (15670213332).

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

13431611394 is a wasteful number, since it uses less digits than its factorization.

13431611394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746200641 (or 746200638 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The spelling of 13431611394 in words is "thirteen billion, four hundred thirty-one million, six hundred eleven thousand, three hundred ninety-four".