311374310243 has 2 divisors, whose sum is σ = 311374310244. Its totient is φ = 311374310242.

The previous prime is 311374310227. The next prime is 311374310287. The reversal of 311374310243 is 342013473113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311374310243 - 2⁴ = 311374310227 is a prime.

It is a super-2 number, since 2×311374310243² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (311373310243) 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, 155687155121 + 155687155122.

It is an arithmetic number, because the mean of its divisors is an integer number (155687155122).

Almost surely, 2^311374310243 is an apocalyptic number.

311374310243 is a deficient number, since it is larger than the sum of its proper divisors (1).

311374310243 is an equidigital number, since it uses as much as digits as its factorization.

311374310243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

Adding to 311374310243 its reverse (342013473113), we get a palindrome (653387783356).

The spelling of 311374310243 in words is "three hundred eleven billion, three hundred seventy-four million, three hundred ten thousand, two hundred forty-three".