311431030432349 has 2 divisors, whose sum is σ = 311431030432350. Its totient is φ = 311431030432348.

The previous prime is 311431030432231. The next prime is 311431030432439. The reversal of 311431030432349 is 943234030134113.

Together with next prime (311431030432439) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310430394331225 + 1000636101124 = 17619035^2 + 1000318^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311431030432349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311431030438349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155715515216174 + 155715515216175.

It is an arithmetic number, because the mean of its divisors is an integer number (155715515216175).

Almost surely, 2^{311431030432349} is an apocalyptic number.

It is an amenable number.

311431030432349 is a deficient number, since it is larger than the sum of its proper divisors (1).

311431030432349 is an equidigital number, since it uses as much as digits as its factorization.

311431030432349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 41.

The spelling of 311431030432349 in words is "three hundred eleven trillion, four hundred thirty-one billion, thirty million, four hundred thirty-two thousand, three hundred forty-nine".