231110122199977 has 2 divisors, whose sum is σ = 231110122199978. Its totient is φ = 231110122199976.

The previous prime is 231110122199969. The next prime is 231110122200043. The reversal of 231110122199977 is 779991221011132.

It is a happy number.

231110122199977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180934135782976 + 50175986417001 = 13451176^2 + 7083501^2 .

It is a cyclic number.

It is not a de Polignac number, because 231110122199977 - 2³ = 231110122199969 is a prime.

It is not a weakly prime, because it can be changed into another prime (231110122179977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115555061099988 + 115555061099989.

It is an arithmetic number, because the mean of its divisors is an integer number (115555061099989).

Almost surely, 2^{231110122199977} is an apocalyptic number.

It is an amenable number.

231110122199977 is a deficient number, since it is larger than the sum of its proper divisors (1).

231110122199977 is an equidigital number, since it uses as much as digits as its factorization.

231110122199977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 55.

The spelling of 231110122199977 in words is "two hundred thirty-one trillion, one hundred ten billion, one hundred twenty-two million, one hundred ninety-nine thousand, nine hundred seventy-seven".