311233123311223 has 2 divisors, whose sum is σ = 311233123311224. Its totient is φ = 311233123311222.

The previous prime is 311233123311203. The next prime is 311233123311233. The reversal of 311233123311223 is 322113321332113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311233123311223 - 2²⁹ = 311232586440311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311233123311203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155616561655611 + 155616561655612.

It is an arithmetic number, because the mean of its divisors is an integer number (155616561655612).

Almost surely, 2^{311233123311223} is an apocalyptic number.

311233123311223 is a deficient number, since it is larger than the sum of its proper divisors (1).

311233123311223 is an equidigital number, since it uses as much as digits as its factorization.

311233123311223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 31.

Adding to 311233123311223 its reverse (322113321332113), we get a palindrome (633346444643336).

The spelling of 311233123311223 in words is "three hundred eleven trillion, two hundred thirty-three billion, one hundred twenty-three million, three hundred eleven thousand, two hundred twenty-three".