79131319 has 4 divisors (see below), whose sum is σ = 79273944. Its totient is φ = 78988696.

The previous prime is 79131317. The next prime is 79131329. The reversal of 79131319 is 91313197.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79131319 - 2¹ = 79131317 is a prime.

It is a super-2 number, since 2×79131319² = 12523531293359522, which 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 (79131317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70477 + ... + 71590.

It is an arithmetic number, because the mean of its divisors is an integer number (19818486).

Almost surely, 2^79131319 is an apocalyptic number.

79131319 is a deficient number, since it is larger than the sum of its proper divisors (142625).

79131319 is a wasteful number, since it uses less digits than its factorization.

79131319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142624.

The product of its digits is 5103, while the sum is 34.

The square root of 79131319 is about 8895.5786208655. The cubic root of 79131319 is about 429.3216616690.

The spelling of 79131319 in words is "seventy-nine million, one hundred thirty-one thousand, three hundred nineteen".