331989140 has 24 divisors (see below), whose sum is σ = 796774272. Its totient is φ = 113824800.

The previous prime is 331989139. The next prime is 331989157. The reversal of 331989140 is 41989133.

It is a happy number.

It is a super-2 number, since 2×331989140² = 220433578155879200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 331989094 and 331989103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185536 + ... + 1185815.

It is an arithmetic number, because the mean of its divisors is an integer number (33198928).

Almost surely, 2^331989140 is an apocalyptic number.

It is an amenable number.

331989140 is an abundant number, since it is smaller than the sum of its proper divisors (464785132).

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

331989140 is a wasteful number, since it uses less digits than its factorization.

331989140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371367 (or 2371365 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 331989140 is about 18220.5691458856. The cubic root of 331989140 is about 692.4280071300.

The spelling of 331989140 in words is "three hundred thirty-one million, nine hundred eighty-nine thousand, one hundred forty".