321423373 has 4 divisors (see below), whose sum is σ = 321495228. Its totient is φ = 321351520.

The previous prime is 321423359. The next prime is 321423379. The reversal of 321423373 is 373324123.

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

It can be written as a sum of positive squares in 2 ways, for example, as 198612649 + 122810724 = 14093^2 + 11082^2 .

It is a cyclic number.

It is not a de Polignac number, because 321423373 - 2⁵ = 321423341 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 (321423379) 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, 28738 + ... + 38323.

It is an arithmetic number, because the mean of its divisors is an integer number (80373807).

Almost surely, 2^321423373 is an apocalyptic number.

It is an amenable number.

321423373 is a deficient number, since it is larger than the sum of its proper divisors (71855).

321423373 is an equidigital number, since it uses as much as digits as its factorization.

321423373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71854.

The product of its digits is 9072, while the sum is 28.

The square root of 321423373 is about 17928.2841621835. The cubic root of 321423373 is about 685.0030177287.

Adding to 321423373 its reverse (373324123), we get a palindrome (694747496).

The spelling of 321423373 in words is "three hundred twenty-one million, four hundred twenty-three thousand, three hundred seventy-three".