311440110240431 has 2 divisors, whose sum is σ = 311440110240432. Its totient is φ = 311440110240430.

The previous prime is 311440110240401. The next prime is 311440110240521. The reversal of 311440110240431 is 134042011044113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311440110240431 is a prime.

It is a super-2 number, since 2×311440110240431² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311440110240394 and 311440110240403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311440110240401) 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, 155720055120215 + 155720055120216.

It is an arithmetic number, because the mean of its divisors is an integer number (155720055120216).

Almost surely, 2^{311440110240431} is an apocalyptic number.

311440110240431 is a deficient number, since it is larger than the sum of its proper divisors (1).

311440110240431 is an equidigital number, since it uses as much as digits as its factorization.

311440110240431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 311440110240431 its reverse (134042011044113), we get a palindrome (445482121284544).

The spelling of 311440110240431 in words is "three hundred eleven trillion, four hundred forty billion, one hundred ten million, two hundred forty thousand, four hundred thirty-one".