2313121999 has 2 divisors, whose sum is σ = 2313122000. Its totient is φ = 2313121998.

The previous prime is 2313121961. The next prime is 2313122011. The reversal of 2313121999 is 9991213132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2313121999 - 2¹¹ = 2313119951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2313125999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156560999 + 1156561000.

It is an arithmetic number, because the mean of its divisors is an integer number (1156561000).

Almost surely, 2^2313121999 is an apocalyptic number.

2313121999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2313121999 is an equidigital number, since it uses as much as digits as its factorization.

2313121999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 40.

The square root of 2313121999 is about 48094.9269570087. The cubic root of 2313121999 is about 1322.5116700240.

The spelling of 2313121999 in words is "two billion, three hundred thirteen million, one hundred twenty-one thousand, nine hundred ninety-nine".