321014399 has 4 divisors (see below), whose sum is σ = 321702264. Its totient is φ = 320326536.

The previous prime is 321014387. The next prime is 321014401. The reversal of 321014399 is 993410123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993410123 = 43 ⋅23102561.

It is a cyclic number.

It is not a de Polignac number, because 321014399 - 2²⁴ = 304237183 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 (321014299) 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, 343232 + ... + 344165.

It is an arithmetic number, because the mean of its divisors is an integer number (80425566).

Almost surely, 2^321014399 is an apocalyptic number.

321014399 is a deficient number, since it is larger than the sum of its proper divisors (687865).

321014399 is an equidigital number, since it uses as much as digits as its factorization.

321014399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687864.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 321014399 is about 17916.8746995674. The cubic root of 321014399 is about 684.7123654296.

The spelling of 321014399 in words is "three hundred twenty-one million, fourteen thousand, three hundred ninety-nine".