331034240 has 32 divisors (see below), whose sum is σ = 791380260. Its totient is φ = 132413440.

The previous prime is 331034233. The next prime is 331034257. The reversal of 331034240 is 42430133.

It can be written as a sum of positive squares in 2 ways, for example, as 306670144 + 24364096 = 17512^2 + 4936^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257981 + ... + 259260.

Almost surely, 2^331034240 is an apocalyptic number.

It is an amenable number.

331034240 is an abundant number, since it is smaller than the sum of its proper divisors (460346020).

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

331034240 is an equidigital number, since it uses as much as digits as its factorization.

331034240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517260 (or 517248 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 331034240 is about 18194.3463746297. The cubic root of 331034240 is about 691.7634929688.

Adding to 331034240 its reverse (42430133), we get a palindrome (373464373).

The spelling of 331034240 in words is "three hundred thirty-one million, thirty-four thousand, two hundred forty".