331975980 has 288 divisors, whose sum is σ = 1240512000. Its totient is φ = 71632512.

The previous prime is 331975967. The next prime is 331976009. The reversal of 331975980 is 89579133.

It is a happy number.

It is a super-2 number, since 2×331975980² = 220416102593920800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1172919 + ... + 1173201.

Almost surely, 2^331975980 is an apocalyptic number.

331975980 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 331975980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (620256000).

331975980 is an abundant number, since it is smaller than the sum of its proper divisors (908536020).

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

331975980 is a wasteful number, since it uses less digits than its factorization.

331975980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 331975980 is about 18220.2080119849. The cubic root of 331975980 is about 692.4188577615.

The spelling of 331975980 in words is "three hundred thirty-one million, nine hundred seventy-five thousand, nine hundred eighty".