331930 has 16 divisors (see below), whose sum is σ = 629280. Its totient is φ = 125712.

The previous prime is 331921. The next prime is 331937. The reversal of 331930 is 39133.

It is a happy number.

It is a super-2 number, since 2×331930² = 220355049800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 331898 and 331907.

It is not an unprimeable number, because it can be changed into a prime (331937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684 + ... + 1063.

It is an arithmetic number, because the mean of its divisors is an integer number (39330).

2³³¹⁹³⁰ is an apocalyptic number.

331930 is a deficient number, since it is larger than the sum of its proper divisors (297350).

331930 is a wasteful number, since it uses less digits than its factorization.

331930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773.

The product of its (nonzero) digits is 243, while the sum is 19.

The square root of 331930 is about 576.1336650466. The cubic root of 331930 is about 69.2386888692.

The spelling of 331930 in words is "three hundred thirty-one thousand, nine hundred thirty".