23112121913 has 2 divisors, whose sum is σ = 23112121914. Its totient is φ = 23112121912.

The previous prime is 23112121867. The next prime is 23112121937. The reversal of 23112121913 is 31912121132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22798584064 + 313537849 = 150992^2 + 17707^2 .

It is a cyclic number.

It is not a de Polignac number, because 23112121913 - 2⁸ = 23112121657 is a prime.

It is not a weakly prime, because it can be changed into another prime (23112121943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11556060956 + 11556060957.

It is an arithmetic number, because the mean of its divisors is an integer number (11556060957).

Almost surely, 2^23112121913 is an apocalyptic number.

It is an amenable number.

23112121913 is a deficient number, since it is larger than the sum of its proper divisors (1).

23112121913 is an equidigital number, since it uses as much as digits as its factorization.

23112121913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 26.

The spelling of 23112121913 in words is "twenty-three billion, one hundred twelve million, one hundred twenty-one thousand, nine hundred thirteen".