311221114943 has 2 divisors, whose sum is σ = 311221114944. Its totient is φ = 311221114942.

The previous prime is 311221114937. The next prime is 311221114979. The reversal of 311221114943 is 349411122113.

It is a weak prime.

It is an emirp because it is prime and its reverse (349411122113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311221114943 - 2²⁴ = 311204337727 is a prime.

It is a super-3 number, since 3×311221114943³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311221114993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155610557471 + 155610557472.

It is an arithmetic number, because the mean of its divisors is an integer number (155610557472).

Almost surely, 2^311221114943 is an apocalyptic number.

311221114943 is a deficient number, since it is larger than the sum of its proper divisors (1).

311221114943 is an equidigital number, since it uses as much as digits as its factorization.

311221114943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The spelling of 311221114943 in words is "three hundred eleven billion, two hundred twenty-one million, one hundred fourteen thousand, nine hundred forty-three".