223110311231 has 2 divisors, whose sum is σ = 223110311232. Its totient is φ = 223110311230.

The previous prime is 223110311161. The next prime is 223110311243. The reversal of 223110311231 is 132113011322.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223110311231 is a prime.

It is a super-3 number, since 3×223110311231³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223110311251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111555155615 + 111555155616.

It is an arithmetic number, because the mean of its divisors is an integer number (111555155616).

Almost surely, 2^223110311231 is an apocalyptic number.

223110311231 is a deficient number, since it is larger than the sum of its proper divisors (1).

223110311231 is an equidigital number, since it uses as much as digits as its factorization.

223110311231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 223110311231 its reverse (132113011322), we get a palindrome (355223322553).

The spelling of 223110311231 in words is "two hundred twenty-three billion, one hundred ten million, three hundred eleven thousand, two hundred thirty-one".