231224375923477 has 2 divisors, whose sum is σ = 231224375923478. Its totient is φ = 231224375923476.

The previous prime is 231224375923447. The next prime is 231224375923493. The reversal of 231224375923477 is 774329573422132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183126905288721 + 48097470634756 = 13532439^2 + 6935234^2 .

It is a cyclic number.

It is not a de Polignac number, because 231224375923477 - 2²⁷ = 231224241705749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231224375923447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115612187961738 + 115612187961739.

It is an arithmetic number, because the mean of its divisors is an integer number (115612187961739).

Almost surely, 2^{231224375923477} is an apocalyptic number.

It is an amenable number.

231224375923477 is a deficient number, since it is larger than the sum of its proper divisors (1).

231224375923477 is an equidigital number, since it uses as much as digits as its factorization.

231224375923477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 106686720, while the sum is 61.

The spelling of 231224375923477 in words is "two hundred thirty-one trillion, two hundred twenty-four billion, three hundred seventy-five million, nine hundred twenty-three thousand, four hundred seventy-seven".