331958961 has 12 divisors (see below), whose sum is σ = 480115792. Its totient is φ = 221020056.

The previous prime is 331958947. The next prime is 331958971. The reversal of 331958961 is 169859133.

331958961 is a `hidden beast` number, since 3 + 3 + 1 + 9 + 589 + 61 = 666.

It is not a de Polignac number, because 331958961 - 2⁹ = 331958449 is a prime.

It is a super-2 number, since 2×331958961² = 220393503576399042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331958941) 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, 16351 + ... + 30516.

Almost surely, 2^331958961 is an apocalyptic number.

It is an amenable number.

331958961 is a deficient number, since it is larger than the sum of its proper divisors (148156831).

331958961 is a wasteful number, since it uses less digits than its factorization.

331958961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47660 (or 47657 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 331958961 is about 18219.7409696186. The cubic root of 331958961 is about 692.4070251003.

The spelling of 331958961 in words is "three hundred thirty-one million, nine hundred fifty-eight thousand, nine hundred sixty-one".