697431399712319 has 2 divisors, whose sum is σ = 697431399712320. Its totient is φ = 697431399712318.

The previous prime is 697431399712309. The next prime is 697431399712357. The reversal of 697431399712319 is 913217993134796.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 697431399712319 - 2⁴⁰ = 696331888084543 is a prime.

It is a super-2 number, since 2×697431399712319² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697431399712309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348715699856159 + 348715699856160.

It is an arithmetic number, because the mean of its divisors is an integer number (348715699856160).

Almost surely, 2^{697431399712319} is an apocalyptic number.

697431399712319 is a deficient number, since it is larger than the sum of its proper divisors (1).

697431399712319 is an equidigital number, since it uses as much as digits as its factorization.

697431399712319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 416649744, while the sum is 74.

The spelling of 697431399712319 in words is "six hundred ninety-seven trillion, four hundred thirty-one billion, three hundred ninety-nine million, seven hundred twelve thousand, three hundred nineteen".