321393123 has 8 divisors (see below), whose sum is σ = 476138000. Its totient is φ = 214262064.

The previous prime is 321393067. The next prime is 321393139.

321393123 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 321393123 - 2⁸ = 321392867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 11903449 = 321393123 / (3 + 2 + 1 + 3 + 9 + 3 + 1 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321393923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5951698 + ... + 5951751.

It is an arithmetic number, because the mean of its divisors is an integer number (59517250).

Almost surely, 2^321393123 is an apocalyptic number.

321393123 is a deficient number, since it is larger than the sum of its proper divisors (154744877).

321393123 is a wasteful number, since it uses less digits than its factorization.

321393123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11903458 (or 11903452 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

The square root of 321393123 is about 17927.4405033178. The cubic root of 321393123 is about 684.9815279086.

The spelling of 321393123 in words is "three hundred twenty-one million, three hundred ninety-three thousand, one hundred twenty-three".