2313120131209 has 2 divisors, whose sum is σ = 2313120131210. Its totient is φ = 2313120131208.

The previous prime is 2313120131177. The next prime is 2313120131291. The reversal of 2313120131209 is 9021310213132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1505889759609 + 807230371600 = 1227147^2 + 898460^2 .

It is a cyclic number.

It is not a de Polignac number, because 2313120131209 - 2⁵ = 2313120131177 is a prime.

It is not a weakly prime, because it can be changed into another prime (2313120131009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156560065604 + 1156560065605.

It is an arithmetic number, because the mean of its divisors is an integer number (1156560065605).

Almost surely, 2^{2313120131209} is an apocalyptic number.

It is an amenable number.

2313120131209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2313120131209 is an equidigital number, since it uses as much as digits as its factorization.

2313120131209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 2313120131209 in words is "two trillion, three hundred thirteen billion, one hundred twenty million, one hundred thirty-one thousand, two hundred nine".