331213604 has 12 divisors (see below), whose sum is σ = 580446300. Its totient is φ = 165371808.

The previous prime is 331213577. The next prime is 331213607. The reversal of 331213604 is 406312133.

It can be written as a sum of positive squares in 2 ways, for example, as 16080100 + 315133504 = 4010^2 + 17752^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 331213604.

It is not an unprimeable number, because it can be changed into a prime (331213607) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 55559 + ... + 61230.

It is an arithmetic number, because the mean of its divisors is an integer number (48370525).

Almost surely, 2^331213604 is an apocalyptic number.

It is an amenable number.

331213604 is a deficient number, since it is larger than the sum of its proper divisors (249232696).

331213604 is a wasteful number, since it uses less digits than its factorization.

331213604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117502 (or 117500 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 331213604 is about 18199.2748207174. The cubic root of 331213604 is about 691.8884096182. Note that the first 3 decimals are identical.

Adding to 331213604 its reverse (406312133), we get a palindrome (737525737).

The spelling of 331213604 in words is "three hundred thirty-one million, two hundred thirteen thousand, six hundred four".