662323185431 has 2 divisors, whose sum is σ = 662323185432. Its totient is φ = 662323185430.

The previous prime is 662323185413. The next prime is 662323185439. The reversal of 662323185431 is 134581323266.

662323185431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (662323185413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 662323185431 - 2¹⁸ = 662322923287 is a prime.

It is a super-2 number, since 2×662323185431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (662323185439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331161592715 + 331161592716.

It is an arithmetic number, because the mean of its divisors is an integer number (331161592716).

Almost surely, 2^662323185431 is an apocalyptic number.

662323185431 is a deficient number, since it is larger than the sum of its proper divisors (1).

662323185431 is an equidigital number, since it uses as much as digits as its factorization.

662323185431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 44.

The spelling of 662323185431 in words is "six hundred sixty-two billion, three hundred twenty-three million, one hundred eighty-five thousand, four hundred thirty-one".