331793280 has 512 divisors, whose sum is σ = 1453132800. Its totient is φ = 69672960.

The previous prime is 331793269. The next prime is 331793299. The reversal of 331793280 is 82397133.

It is a happy number.

331793280 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×331793280² = 220173561306316800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1572375 + ... + 1572585.

It is an arithmetic number, because the mean of its divisors is an integer number (2838150).

Almost surely, 2^331793280 is an apocalyptic number.

331793280 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 331793280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (726566400).

331793280 is an abundant number, since it is smaller than the sum of its proper divisors (1121339520).

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

331793280 is a wasteful number, since it uses less digits than its factorization.

331793280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 331793280 is about 18215.1936580427. The cubic root of 331793280 is about 692.2918122853.

The spelling of 331793280 in words is "three hundred thirty-one million, seven hundred ninety-three thousand, two hundred eighty".