331961 has 8 divisors (see below), whose sum is σ = 387840. Its totient is φ = 278208.

The previous prime is 331957. The next prime is 331967. The reversal of 331961 is 169133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 331961 - 2² = 331957 is a prime.

It is a super-2 number, since 2×331961² = 220396211042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176 + ... + 833.

It is an arithmetic number, because the mean of its divisors is an integer number (48480).

2³³¹⁹⁶¹ is an apocalyptic number.

It is an amenable number.

331961 is a deficient number, since it is larger than the sum of its proper divisors (55879).

331961 is a wasteful number, since it uses less digits than its factorization.

331961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063.

The product of its digits is 486, while the sum is 23.

The square root of 331961 is about 576.1605678975. The cubic root of 331961 is about 69.2408442760.

The spelling of 331961 in words is "three hundred thirty-one thousand, nine hundred sixty-one".