7979131319 has 16 divisors (see below), whose sum is σ = 8560871424. Its totient is φ = 7418347200.

The previous prime is 7979131309. The next prime is 7979131331. The reversal of 7979131319 is 9131319797.

It is a happy number.

7979131319 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 7979131319 - 2⁸ = 7979131063 is a prime.

It is a super-2 number, since 2×7979131319² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7979131309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239942 + ... + 271164.

It is an arithmetic number, because the mean of its divisors is an integer number (535054464).

Almost surely, 2^7979131319 is an apocalyptic number.

7979131319 is a deficient number, since it is larger than the sum of its proper divisors (581740105).

7979131319 is a wasteful number, since it uses less digits than its factorization.

7979131319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31558.

The product of its digits is 321489, while the sum is 50.

The square root of 7979131319 is about 89325.9834482666. The cubic root of 7979131319 is about 1998.2594288955.

The spelling of 7979131319 in words is "seven billion, nine hundred seventy-nine million, one hundred thirty-one thousand, three hundred nineteen".