331730330 has 16 divisors (see below), whose sum is σ = 600211944. Its totient is φ = 132003840.

The previous prime is 331730279. The next prime is 331730341. The reversal of 331730330 is 33037133.

It can be written as a sum of positive squares in 4 ways, for example, as 263055961 + 68674369 = 16219^2 + 8287^2 .

It is a super-2 number, since 2×331730330² = 220090023683817800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 331730296 and 331730305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84011 + ... + 87870.

Almost surely, 2^331730330 is an apocalyptic number.

331730330 is a deficient number, since it is larger than the sum of its proper divisors (268481614).

331730330 is a wasteful number, since it uses less digits than its factorization.

331730330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172081.

The product of its (nonzero) digits is 1701, while the sum is 23.

The square root of 331730330 is about 18213.4656229944. The cubic root of 331730330 is about 692.2480274665.

Adding to 331730330 its reverse (33037133), we get a palindrome (364767463).

The spelling of 331730330 in words is "three hundred thirty-one million, seven hundred thirty thousand, three hundred thirty".