397260631 has 2 divisors, whose sum is σ = 397260632. Its totient is φ = 397260630.

The previous prime is 397260593. The next prime is 397260673. The reversal of 397260631 is 136062793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397260631 - 2¹⁷ = 397129559 is a prime.

It is a super-2 number, since 2×397260631² = 315632017885036322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397260431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198630315 + 198630316.

It is an arithmetic number, because the mean of its divisors is an integer number (198630316).

Almost surely, 2^397260631 is an apocalyptic number.

397260631 is a deficient number, since it is larger than the sum of its proper divisors (1).

397260631 is an equidigital number, since it uses as much as digits as its factorization.

397260631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 397260631 is about 19931.3981195500. The cubic root of 397260631 is about 735.1204584529.

The spelling of 397260631 in words is "three hundred ninety-seven million, two hundred sixty thousand, six hundred thirty-one".