323131220304 has 40 divisors (see below), whose sum is σ = 838433018400. Its totient is φ = 107235907968.

The previous prime is 323131220257. The next prime is 323131220311. The reversal of 323131220304 is 403022131323.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 14817079 + ... + 14838870.

It is an arithmetic number, because the mean of its divisors is an integer number (20960825460).

Almost surely, 2^323131220304 is an apocalyptic number.

It is an amenable number.

323131220304 is an abundant number, since it is smaller than the sum of its proper divisors (515301798096).

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

323131220304 is a wasteful number, since it uses less digits than its factorization.

323131220304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29656187 (or 29656181 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 323131220304 its reverse (403022131323), we get a palindrome (726153351627).

The spelling of 323131220304 in words is "three hundred twenty-three billion, one hundred thirty-one million, two hundred twenty thousand, three hundred four".