313222231 has 4 divisors (see below), whose sum is σ = 357968272. Its totient is φ = 268476192.

The previous prime is 313222199. The next prime is 313222249. The reversal of 313222231 is 132222313.

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

It is a cyclic number.

It is not a de Polignac number, because 313222231 - 2⁵ = 313222199 is a prime.

It is a super-2 number, since 2×313222231² = 196216331985234722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313222199 and 313222208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313222271) 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, 22373010 + ... + 22373023.

It is an arithmetic number, because the mean of its divisors is an integer number (89492068).

Almost surely, 2^313222231 is an apocalyptic number.

313222231 is a deficient number, since it is larger than the sum of its proper divisors (44746041).

313222231 is an equidigital number, since it uses as much as digits as its factorization.

313222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44746040.

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

The square root of 313222231 is about 17698.0855179310. The cubic root of 313222231 is about 679.1267850035.

Adding to 313222231 its reverse (132222313), we get a palindrome (445444544).

It can be divided in two parts, 3 and 13222231, that multiplied together give a palindrome (39666693).

The spelling of 313222231 in words is "three hundred thirteen million, two hundred twenty-two thousand, two hundred thirty-one".