23313121919 has 2 divisors, whose sum is σ = 23313121920. Its totient is φ = 23313121918.

The previous prime is 23313121907. The next prime is 23313121939. The reversal of 23313121919 is 91912131332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23313121919 - 2¹⁶ = 23313056383 is a prime.

It is a super-2 number, since 2×23313121919² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23313121939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11656560959 + 11656560960.

It is an arithmetic number, because the mean of its divisors is an integer number (11656560960).

Almost surely, 2^23313121919 is an apocalyptic number.

23313121919 is a deficient number, since it is larger than the sum of its proper divisors (1).

23313121919 is an equidigital number, since it uses as much as digits as its factorization.

23313121919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 35.

The spelling of 23313121919 in words is "twenty-three billion, three hundred thirteen million, one hundred twenty-one thousand, nine hundred nineteen".