331897131 has 12 divisors (see below), whose sum is σ = 480256920. Its totient is φ = 220872480.

The previous prime is 331897123. The next prime is 331897133. The reversal of 331897131 is 131798133.

It is not a de Polignac number, because 331897131 - 2³ = 331897123 is a prime.

It is a super-2 number, since 2×331897131² = 220311411132062322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331897133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27285 + ... + 37526.

It is an arithmetic number, because the mean of its divisors is an integer number (40021410).

Almost surely, 2^331897131 is an apocalyptic number.

331897131 is a deficient number, since it is larger than the sum of its proper divisors (148359789).

331897131 is a wasteful number, since it uses less digits than its factorization.

331897131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65386 (or 65383 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 331897131 is about 18218.0441046782. The cubic root of 331897131 is about 692.3640336569.

The spelling of 331897131 in words is "three hundred thirty-one million, eight hundred ninety-seven thousand, one hundred thirty-one".