331320232 has 8 divisors (see below), whose sum is σ = 621225450. Its totient is φ = 165660112.

The previous prime is 331320217. The next prime is 331320277. The reversal of 331320232 is 232023133.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 306460036 + 24860196 = 17506^2 + 4986^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×331320232² = 219546192265067648, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20707507 + ... + 20707522.

Almost surely, 2^331320232 is an apocalyptic number.

It is an amenable number.

331320232 is a deficient number, since it is larger than the sum of its proper divisors (289905218).

331320232 is a wasteful number, since it uses less digits than its factorization.

331320232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41415035 (or 41415031 counting only the distinct ones).

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

The square root of 331320232 is about 18202.2040423681. The cubic root of 331320232 is about 691.9626484790.

Adding to 331320232 its reverse (232023133), we get a palindrome (563343365).

The spelling of 331320232 in words is "three hundred thirty-one million, three hundred twenty thousand, two hundred thirty-two".