321131233320 has 64 divisors (see below), whose sum is σ = 963533905920. Its totient is φ = 85622532864.

The previous prime is 321131233309. The next prime is 321131233349. The reversal of 321131233320 is 23332131123.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 648409 + ... + 1030871.

It is an arithmetic number, because the mean of its divisors is an integer number (15055217280).

Almost surely, 2^321131233320 is an apocalyptic number.

321131233320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321131233320 is an abundant number, since it is smaller than the sum of its proper divisors (642402672600).

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

321131233320 is a wasteful number, since it uses less digits than its factorization.

321131233320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389474 (or 389470 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 321131233320 its reverse (23332131123), we get a palindrome (344463364443).

The spelling of 321131233320 in words is "three hundred twenty-one billion, one hundred thirty-one million, two hundred thirty-three thousand, three hundred twenty".