323121032321999 has 4 divisors (see below), whose sum is σ = 323346518040336. Its totient is φ = 322895546603664.

The previous prime is 323121032321957. The next prime is 323121032322019. The reversal of 323121032321999 is 999123230121323.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323121032321999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323121032321299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112742857019 + ... + 112742859884.

It is an arithmetic number, because the mean of its divisors is an integer number (80836629510084).

Almost surely, 2^{323121032321999} is an apocalyptic number.

323121032321999 is a deficient number, since it is larger than the sum of its proper divisors (225485718337).

323121032321999 is a wasteful number, since it uses less digits than its factorization.

323121032321999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225485718336.

The product of its (nonzero) digits is 944784, while the sum is 50.

The spelling of 323121032321999 in words is "three hundred twenty-three trillion, one hundred twenty-one billion, thirty-two million, three hundred twenty-one thousand, nine hundred ninety-nine".