23112012997 has 2 divisors, whose sum is σ = 23112012998. Its totient is φ = 23112012996.

The previous prime is 23112012991. The next prime is 23112013021. The reversal of 23112012997 is 79921021132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12796360641 + 10315652356 = 113121^2 + 101566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23112012997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23112012991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11556006498 + 11556006499.

It is an arithmetic number, because the mean of its divisors is an integer number (11556006499).

Almost surely, 2^23112012997 is an apocalyptic number.

It is an amenable number.

23112012997 is a deficient number, since it is larger than the sum of its proper divisors (1).

23112012997 is an equidigital number, since it uses as much as digits as its factorization.

23112012997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 23112012997 in words is "twenty-three billion, one hundred twelve million, twelve thousand, nine hundred ninety-seven".