23131202009977 has 2 divisors, whose sum is σ = 23131202009978. Its totient is φ = 23131202009976.

The previous prime is 23131202009957. The next prime is 23131202010001. The reversal of 23131202009977 is 77990020213132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15425853235776 + 7705348774201 = 3927576^2 + 2775851^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131202009977 - 2⁷ = 23131202009849 is a prime.

It is not a weakly prime, because it can be changed into another prime (23131202009917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11565601004988 + 11565601004989.

It is an arithmetic number, because the mean of its divisors is an integer number (11565601004989).

Almost surely, 2^{23131202009977} is an apocalyptic number.

It is an amenable number.

23131202009977 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131202009977 is an equidigital number, since it uses as much as digits as its factorization.

23131202009977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 46.

The spelling of 23131202009977 in words is "twenty-three trillion, one hundred thirty-one billion, two hundred two million, nine thousand, nine hundred seventy-seven".