311223045253 has 2 divisors, whose sum is σ = 311223045254. Its totient is φ = 311223045252.

The previous prime is 311223045239. The next prime is 311223045307. The reversal of 311223045253 is 352540322113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311009213124 + 213832129 = 557682^2 + 14623^2 .

It is a cyclic number.

It is not a de Polignac number, because 311223045253 - 2²⁹ = 310686174341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311223045223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155611522626 + 155611522627.

It is an arithmetic number, because the mean of its divisors is an integer number (155611522627).

Almost surely, 2^311223045253 is an apocalyptic number.

It is an amenable number.

311223045253 is a deficient number, since it is larger than the sum of its proper divisors (1).

311223045253 is an equidigital number, since it uses as much as digits as its factorization.

311223045253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 311223045253 its reverse (352540322113), we get a palindrome (663763367366).

The spelling of 311223045253 in words is "three hundred eleven billion, two hundred twenty-three million, forty-five thousand, two hundred fifty-three".