311234620302143 has 2 divisors, whose sum is σ = 311234620302144. Its totient is φ = 311234620302142.

The previous prime is 311234620302119. The next prime is 311234620302163. The reversal of 311234620302143 is 341203026432113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311234620302143 - 2²⁸ = 311234351866687 is a prime.

It is a super-2 number, since 2×311234620302143² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311234620302103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155617310151071 + 155617310151072.

It is an arithmetic number, because the mean of its divisors is an integer number (155617310151072).

Almost surely, 2^{311234620302143} is an apocalyptic number.

311234620302143 is a deficient number, since it is larger than the sum of its proper divisors (1).

311234620302143 is an equidigital number, since it uses as much as digits as its factorization.

311234620302143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 35.

Adding to 311234620302143 its reverse (341203026432113), we get a palindrome (652437646734256).

The spelling of 311234620302143 in words is "three hundred eleven trillion, two hundred thirty-four billion, six hundred twenty million, three hundred two thousand, one hundred forty-three".