2313111809 has 2 divisors, whose sum is σ = 2313111810. Its totient is φ = 2313111808.

The previous prime is 2313111793. The next prime is 2313111839. The reversal of 2313111809 is 9081113132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2296326400 + 16785409 = 47920^2 + 4097^2 .

It is a cyclic number.

It is not a de Polignac number, because 2313111809 - 2⁴ = 2313111793 is a prime.

It is not a weakly prime, because it can be changed into another prime (2313111839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156555904 + 1156555905.

It is an arithmetic number, because the mean of its divisors is an integer number (1156555905).

Almost surely, 2^2313111809 is an apocalyptic number.

It is an amenable number.

2313111809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2313111809 is an equidigital number, since it uses as much as digits as its factorization.

2313111809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 2313111809 is about 48094.8210205631. The cubic root of 2313111809 is about 1322.5097280002.

The spelling of 2313111809 in words is "two billion, three hundred thirteen million, one hundred eleven thousand, eight hundred nine".