323120323122421 has 4 divisors (see below), whose sum is σ = 352494897951744. Its totient is φ = 293745748293100.

The previous prime is 323120323122299. The next prime is 323120323122433. The reversal of 323120323122421 is 124221323021323.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 323120323122421 - 2¹⁵ = 323120323089653 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 (323120323122521) 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, 14687287414645 + ... + 14687287414666.

It is an arithmetic number, because the mean of its divisors is an integer number (88123724487936).

Almost surely, 2^{323120323122421} is an apocalyptic number.

It is an amenable number.

323120323122421 is a deficient number, since it is larger than the sum of its proper divisors (29374574829323).

323120323122421 is a wasteful number, since it uses less digits than its factorization.

323120323122421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29374574829322.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 323120323122421 its reverse (124221323021323), we get a palindrome (447341646143744).

The spelling of 323120323122421 in words is "three hundred twenty-three trillion, one hundred twenty billion, three hundred twenty-three million, one hundred twenty-two thousand, four hundred twenty-one".