79313431397 has 8 divisors (see below), whose sum is σ = 81877585152. Its totient is φ = 76749631200.

The previous prime is 79313431387. The next prime is 79313431411.

79313431397 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79313431397 - 2²⁴ = 79296654181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79313431387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412697 + ... + 573537.

It is an arithmetic number, because the mean of its divisors is an integer number (10234698144).

Almost surely, 2^79313431397 is an apocalyptic number.

It is an amenable number.

79313431397 is a deficient number, since it is larger than the sum of its proper divisors (2564153755).

79313431397 is a wasteful number, since it uses less digits than its factorization.

79313431397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176779.

The product of its digits is 1285956, while the sum is 50.

The spelling of 79313431397 in words is "seventy-nine billion, three hundred thirteen million, four hundred thirty-one thousand, three hundred ninety-seven".