79205131 has 2 divisors, whose sum is σ = 79205132. Its totient is φ = 79205130.

The previous prime is 79205099. The next prime is 79205141. The reversal of 79205131 is 13150297.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79205131 - 2⁵ = 79205099 is a prime.

It is a super-2 number, since 2×79205131² = 12546905553454322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 79205131.

It is not a weakly prime, because it can be changed into another prime (79205141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39602565 + 39602566.

It is an arithmetic number, because the mean of its divisors is an integer number (39602566).

Almost surely, 2^79205131 is an apocalyptic number.

79205131 is a deficient number, since it is larger than the sum of its proper divisors (1).

79205131 is an equidigital number, since it uses as much as digits as its factorization.

79205131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 79205131 is about 8899.7264564704. The cubic root of 79205131 is about 429.4551075369.

The spelling of 79205131 in words is "seventy-nine million, two hundred five thousand, one hundred thirty-one".