331916 has 18 divisors (see below), whose sum is σ = 630252. Its totient is φ = 152880.

The previous prime is 331909. The next prime is 331921. The reversal of 331916 is 619133.

It is a super-2 number, since 2×331916² = 220336462112, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 331891 and 331900.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 331916.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 431 + ... + 921.

It is an arithmetic number, because the mean of its divisors is an integer number (35014).

2³³¹⁹¹⁶ is an apocalyptic number.

It is an amenable number.

331916 is a deficient number, since it is larger than the sum of its proper divisors (298336).

331916 is a wasteful number, since it uses less digits than its factorization.

331916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 506 counting only the distinct ones).

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

The square root of 331916 is about 576.1215149602. The cubic root of 331916 is about 69.2377154157.

The spelling of 331916 in words is "three hundred thirty-one thousand, nine hundred sixteen".