397632375331 has 2 divisors, whose sum is σ = 397632375332. Its totient is φ = 397632375330.

The previous prime is 397632375317. The next prime is 397632375337. The reversal of 397632375331 is 133573236793.

It is a strong prime.

It is an emirp because it is prime and its reverse (133573236793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 397632375331 - 2⁵ = 397632375299 is a prime.

It is a super-2 number, since 2×397632375331² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (397632375337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198816187665 + 198816187666.

It is an arithmetic number, because the mean of its divisors is an integer number (198816187666).

Almost surely, 2^397632375331 is an apocalyptic number.

397632375331 is a deficient number, since it is larger than the sum of its proper divisors (1).

397632375331 is an equidigital number, since it uses as much as digits as its factorization.

397632375331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6429780, while the sum is 52.

The spelling of 397632375331 in words is "three hundred ninety-seven billion, six hundred thirty-two million, three hundred seventy-five thousand, three hundred thirty-one".