79131211 has 2 divisors, whose sum is σ = 79131212. Its totient is φ = 79131210.

The previous prime is 79131203. The next prime is 79131229. The reversal of 79131211 is 11213197.

It is a weak prime.

It is an emirp because it is prime and its reverse (11213197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79131211 - 2³ = 79131203 is a prime.

It is not a weakly prime, because it can be changed into another prime (79131281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39565605 + 39565606.

It is an arithmetic number, because the mean of its divisors is an integer number (39565606).

Almost surely, 2^79131211 is an apocalyptic number.

79131211 is a deficient number, since it is larger than the sum of its proper divisors (1).

79131211 is an equidigital number, since it uses as much as digits as its factorization.

79131211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378, while the sum is 25.

The square root of 79131211 is about 8895.5725504320. The cubic root of 79131211 is about 429.3214663533.

The spelling of 79131211 in words is "seventy-nine million, one hundred thirty-one thousand, two hundred eleven".