331332131497 has 2 divisors, whose sum is σ = 331332131498. Its totient is φ = 331332131496.

The previous prime is 331332131437. The next prime is 331332131549. The reversal of 331332131497 is 794131233133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294071936656 + 37260194841 = 542284^2 + 193029^2 .

It is a cyclic number.

It is not a de Polignac number, because 331332131497 - 2²⁷ = 331197913769 is a prime.

It is a super-2 number, since 2×331332131497² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331332131437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165666065748 + 165666065749.

It is an arithmetic number, because the mean of its divisors is an integer number (165666065749).

Almost surely, 2^331332131497 is an apocalyptic number.

It is an amenable number.

331332131497 is a deficient number, since it is larger than the sum of its proper divisors (1).

331332131497 is an equidigital number, since it uses as much as digits as its factorization.

331332131497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 40.

The spelling of 331332131497 in words is "three hundred thirty-one billion, three hundred thirty-two million, one hundred thirty-one thousand, four hundred ninety-seven".