323120231220 has 48 divisors (see below), whose sum is σ = 911245567680. Its totient is φ = 85545497856.

The previous prime is 323120231179. The next prime is 323120231237. The reversal of 323120231220 is 22132021323.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19363377 + ... + 19380056.

It is an arithmetic number, because the mean of its divisors is an integer number (18984282660).

Almost surely, 2^323120231220 is an apocalyptic number.

323120231220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

323120231220 is an abundant number, since it is smaller than the sum of its proper divisors (588125336460).

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

323120231220 is a wasteful number, since it uses less digits than its factorization.

323120231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38743584 (or 38743582 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 323120231220 its reverse (22132021323), we get a palindrome (345252252543).

The spelling of 323120231220 in words is "three hundred twenty-three billion, one hundred twenty million, two hundred thirty-one thousand, two hundred twenty".