311220212131033 has 2 divisors, whose sum is σ = 311220212131034. Its totient is φ = 311220212131032.

The previous prime is 311220212131027. The next prime is 311220212131069. The reversal of 311220212131033 is 330131212022113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278017874081424 + 33202338049609 = 16673868^2 + 5762147^2 .

It is a cyclic number.

It is not a de Polignac number, because 311220212131033 - 2²¹ = 311220210033881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311220212130989 and 311220212131007.

It is not a weakly prime, because it can be changed into another prime (311220212431033) 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, 155610106065516 + 155610106065517.

It is an arithmetic number, because the mean of its divisors is an integer number (155610106065517).

Almost surely, 2^{311220212131033} is an apocalyptic number.

It is an amenable number.

311220212131033 is a deficient number, since it is larger than the sum of its proper divisors (1).

311220212131033 is an equidigital number, since it uses as much as digits as its factorization.

311220212131033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 311220212131033 its reverse (330131212022113), we get a palindrome (641351424153146).

The spelling of 311220212131033 in words is "three hundred eleven trillion, two hundred twenty billion, two hundred twelve million, one hundred thirty-one thousand, thirty-three".