223131310313 has 4 divisors (see below), whose sum is σ = 226789200708. Its totient is φ = 219473419920.

The previous prime is 223131310301. The next prime is 223131310333. The reversal of 223131310313 is 313013131322.

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 92035177129 + 131096133184 = 303373^2 + 362072^2 .

It is a cyclic number.

It is not a de Polignac number, because 223131310313 - 2¹⁸ = 223131048169 is a prime.

It is a super-3 number, since 3×223131310313³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223131310333) 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, 1828945106 + ... + 1828945227.

It is an arithmetic number, because the mean of its divisors is an integer number (56697300177).

Almost surely, 2^223131310313 is an apocalyptic number.

It is an amenable number.

223131310313 is a deficient number, since it is larger than the sum of its proper divisors (3657890395).

223131310313 is an equidigital number, since it uses as much as digits as its factorization.

223131310313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657890394.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 223131310313 its reverse (313013131322), we get a palindrome (536144441635).

The spelling of 223131310313 in words is "two hundred twenty-three billion, one hundred thirty-one million, three hundred ten thousand, three hundred thirteen".