423631342663973 has 2 divisors, whose sum is σ = 423631342663974. Its totient is φ = 423631342663972.

The previous prime is 423631342663961. The next prime is 423631342664017. The reversal of 423631342663973 is 379366243136324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383274316676449 + 40357025987524 = 19577393^2 + 6352718^2 .

It is a cyclic number.

It is not a de Polignac number, because 423631342663973 - 2⁴ = 423631342663957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423631342668973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211815671331986 + 211815671331987.

It is an arithmetic number, because the mean of its divisors is an integer number (211815671331987).

Almost surely, 2^{423631342663973} is an apocalyptic number.

It is an amenable number.

423631342663973 is a deficient number, since it is larger than the sum of its proper divisors (1).

423631342663973 is an equidigital number, since it uses as much as digits as its factorization.

423631342663973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211631616, while the sum is 62.

The spelling of 423631342663973 in words is "four hundred twenty-three trillion, six hundred thirty-one billion, three hundred forty-two million, six hundred sixty-three thousand, nine hundred seventy-three".