331189380 has 144 divisors (see below), whose sum is σ = 1065355200. Its totient is φ = 83047680.

The previous prime is 331189379. The next prime is 331189387. The reversal of 331189380 is 83981133.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331189387) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 611910 + ... + 612450.

It is an arithmetic number, because the mean of its divisors is an integer number (7398300).

Almost surely, 2^331189380 is an apocalyptic number.

331189380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331189380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (532677600).

331189380 is an abundant number, since it is smaller than the sum of its proper divisors (734165820).

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

331189380 is a wasteful number, since it uses less digits than its factorization.

331189380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 331189380 is about 18198.6092875252. The cubic root of 331189380 is about 691.8715416381.

The spelling of 331189380 in words is "three hundred thirty-one million, one hundred eighty-nine thousand, three hundred eighty".