331240330 has 8 divisors (see below), whose sum is σ = 596232612. Its totient is φ = 132496128.

The previous prime is 331240313. The next prime is 331240339. The reversal of 331240330 is 33042133.

It can be written as a sum of positive squares in 2 ways, for example, as 294843241 + 36397089 = 17171^2 + 6033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 331240298 and 331240307.

It is not an unprimeable number, because it can be changed into a prime (331240339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16562007 + ... + 16562026.

Almost surely, 2^331240330 is an apocalyptic number.

331240330 is a deficient number, since it is larger than the sum of its proper divisors (264992282).

331240330 is a wasteful number, since it uses less digits than its factorization.

331240330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33124040.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 331240330 is about 18200.0090659318. The cubic root of 331240330 is about 691.9070188702.

Adding to 331240330 its reverse (33042133), we get a palindrome (364282463).

The spelling of 331240330 in words is "three hundred thirty-one million, two hundred forty thousand, three hundred thirty".