311234243 has 2 divisors, whose sum is σ = 311234244. Its totient is φ = 311234242.

The previous prime is 311234233. The next prime is 311234257. The reversal of 311234243 is 342432113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311234243 - 2⁸ = 311233987 is a prime.

It is not a weakly prime, because it can be changed into another prime (311234213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155617121 + 155617122.

It is an arithmetic number, because the mean of its divisors is an integer number (155617122).

Almost surely, 2^311234243 is an apocalyptic number.

311234243 is a deficient number, since it is larger than the sum of its proper divisors (1).

311234243 is an equidigital number, since it uses as much as digits as its factorization.

311234243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 23.

The square root of 311234243 is about 17641.8321894298. The cubic root of 311234243 is about 677.6869528500.

Adding to 311234243 its reverse (342432113), we get a palindrome (653666356).

The spelling of 311234243 in words is "three hundred eleven million, two hundred thirty-four thousand, two hundred forty-three".