321123231320 has 32 divisors (see below), whose sum is σ = 722907519120. Its totient is φ = 128381692800.

The previous prime is 321123231301. The next prime is 321123231353. The reversal of 321123231320 is 23132321123.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2035502 + ... + 2187581.

Almost surely, 2^321123231320 is an apocalyptic number.

It is an amenable number.

321123231320 is an abundant number, since it is smaller than the sum of its proper divisors (401784287800).

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

321123231320 is a wasteful number, since it uses less digits than its factorization.

321123231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224995 (or 4224991 counting only the distinct ones).

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

Adding to 321123231320 its reverse (23132321123), we get a palindrome (344255552443).

The spelling of 321123231320 in words is "three hundred twenty-one billion, one hundred twenty-three million, two hundred thirty-one thousand, three hundred twenty".