331217280 has 96 divisors (see below), whose sum is σ = 1143754560. Its totient is φ = 88323072.

The previous prime is 331217233. The next prime is 331217281. The reversal of 331217280 is 82712133.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331217281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22992 + ... + 34511.

It is an arithmetic number, because the mean of its divisors is an integer number (11914110).

Almost surely, 2^331217280 is an apocalyptic number.

331217280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331217280 is an abundant number, since it is smaller than the sum of its proper divisors (812537280).

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

331217280 is a wasteful number, since it uses less digits than its factorization.

331217280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57528 (or 57513 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 331217280 is about 18199.3758134723. The cubic root of 331217280 is about 691.8909692678.

It can be divided in two parts, 33121 and 7280, that added together give a square (40401 = 201²).

The spelling of 331217280 in words is "three hundred thirty-one million, two hundred seventeen thousand, two hundred eighty".