331996 has 24 divisors (see below), whose sum is σ = 677376. Its totient is φ = 139440.

The previous prime is 331973. The next prime is 331997. The reversal of 331996 is 699133.

It is a super-2 number, since 2×331996² = 220442688032, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331997) 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, 1905 + ... + 2071.

It is an arithmetic number, because the mean of its divisors is an integer number (28224).

2³³¹⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

331996 is an abundant number, since it is smaller than the sum of its proper divisors (345380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331996 is a wasteful number, since it uses less digits than its factorization.

331996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 247 counting only the distinct ones).

The product of its digits is 4374, while the sum is 31.

The square root of 331996 is about 576.1909405744. The cubic root of 331996 is about 69.2432776386.

The spelling of 331996 in words is "three hundred thirty-one thousand, nine hundred ninety-six".