23303312212991 has 2 divisors, whose sum is σ = 23303312212992. Its totient is φ = 23303312212990.

The previous prime is 23303312212913. The next prime is 23303312213039. The reversal of 23303312212991 is 19921221330332.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23303312212991 is a prime.

It is a super-2 number, since 2×23303312212991² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23303312214991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11651656106495 + 11651656106496.

It is an arithmetic number, because the mean of its divisors is an integer number (11651656106496).

Almost surely, 2^{23303312212991} is an apocalyptic number.

23303312212991 is a deficient number, since it is larger than the sum of its proper divisors (1).

23303312212991 is an equidigital number, since it uses as much as digits as its factorization.

23303312212991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 41.

The spelling of 23303312212991 in words is "twenty-three trillion, three hundred three billion, three hundred twelve million, two hundred twelve thousand, nine hundred ninety-one".