321313223 has 16 divisors (see below), whose sum is σ = 406093056. Its totient is φ = 246939840.

The previous prime is 321313207. The next prime is 321313241. The reversal of 321313223 is 322313123.

It is not a de Polignac number, because 321313223 - 2⁴ = 321313207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321313195 and 321313204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321313253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22961 + ... + 34202.

It is an arithmetic number, because the mean of its divisors is an integer number (25380816).

Almost surely, 2^321313223 is an apocalyptic number.

321313223 is a deficient number, since it is larger than the sum of its proper divisors (84779833).

321313223 is a wasteful number, since it uses less digits than its factorization.

321313223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57254.

The product of its digits is 648, while the sum is 20.

The square root of 321313223 is about 17925.2119373803. The cubic root of 321313223 is about 684.9247598820.

Adding to 321313223 its reverse (322313123), we get a palindrome (643626346).

The spelling of 321313223 in words is "three hundred twenty-one million, three hundred thirteen thousand, two hundred twenty-three".