311143233347 has 2 divisors, whose sum is σ = 311143233348. Its totient is φ = 311143233346.

The previous prime is 311143233287. The next prime is 311143233371. The reversal of 311143233347 is 743332341113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311143233347 is a prime.

It is a super-2 number, since 2×311143233347² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (311143253347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155571616673 + 155571616674.

It is an arithmetic number, because the mean of its divisors is an integer number (155571616674).

Almost surely, 2^311143233347 is an apocalyptic number.

311143233347 is a deficient number, since it is larger than the sum of its proper divisors (1).

311143233347 is an equidigital number, since it uses as much as digits as its factorization.

311143233347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 35.

The spelling of 311143233347 in words is "three hundred eleven billion, one hundred forty-three million, two hundred thirty-three thousand, three hundred forty-seven".