313221223 has 4 divisors (see below), whose sum is σ = 357967120. Its totient is φ = 268475328.

The previous prime is 313221203. The next prime is 313221253. The reversal of 313221223 is 322122313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322122313 = 1151 ⋅279863.

It is a cyclic number.

It is not a de Polignac number, because 313221223 - 2⁵ = 313221191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 313221223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313221203) 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, 22372938 + ... + 22372951.

It is an arithmetic number, because the mean of its divisors is an integer number (89491780).

Almost surely, 2^313221223 is an apocalyptic number.

313221223 is a deficient number, since it is larger than the sum of its proper divisors (44745897).

313221223 is an equidigital number, since it uses as much as digits as its factorization.

313221223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44745896.

The product of its digits is 432, while the sum is 19.

The square root of 313221223 is about 17698.0570402516. The cubic root of 313221223 is about 679.1260564893.

Adding to 313221223 its reverse (322122313), we get a palindrome (635343536).

The spelling of 313221223 in words is "three hundred thirteen million, two hundred twenty-one thousand, two hundred twenty-three".