31080979 has 6 divisors (see below), whose sum is σ = 32742420. Its totient is φ = 29422116.

The previous prime is 31080977. The next prime is 31080983. The reversal of 31080979 is 97908013.

It is not a de Polignac number, because 31080979 - 2¹ = 31080977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31080977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23662 + ... + 24940.

It is an arithmetic number, because the mean of its divisors is an integer number (5457070).

Almost surely, 2^31080979 is an apocalyptic number.

31080979 is a deficient number, since it is larger than the sum of its proper divisors (1661441).

31080979 is an frugal number, since it uses more digits than its factorization.

31080979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577 (or 1298 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 31080979 is about 5575.0317487885. The cubic root of 31080979 is about 314.4113605943.

The spelling of 31080979 in words is "thirty-one million, eighty thousand, nine hundred seventy-nine".