23201309993 has 2 divisors, whose sum is σ = 23201309994. Its totient is φ = 23201309992.

The previous prime is 23201309981. The next prime is 23201310049. The reversal of 23201309993 is 39990310232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21423591424 + 1777718569 = 146368^2 + 42163^2 .

It is a cyclic number.

It is not a de Polignac number, because 23201309993 - 2²⁰ = 23200261417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23201309993.

It is not a weakly prime, because it can be changed into another prime (23201309293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11600654996 + 11600654997.

It is an arithmetic number, because the mean of its divisors is an integer number (11600654997).

Almost surely, 2^23201309993 is an apocalyptic number.

It is an amenable number.

23201309993 is a deficient number, since it is larger than the sum of its proper divisors (1).

23201309993 is an equidigital number, since it uses as much as digits as its factorization.

23201309993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 41.

The spelling of 23201309993 in words is "twenty-three billion, two hundred one million, three hundred nine thousand, nine hundred ninety-three".