311333111005949 has 2 divisors, whose sum is σ = 311333111005950. Its totient is φ = 311333111005948.

The previous prime is 311333111005901. The next prime is 311333111005993. The reversal of 311333111005949 is 949500111333113.

It is an a-pointer prime, because the next prime (311333111005993) can be obtained adding 311333111005949 to its sum of digits (44).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310822717927225 + 510393078724 = 17630165^2 + 714418^2 .

It is a cyclic number.

It is not a de Polignac number, because 311333111005949 - 2¹² = 311333111001853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311333111025949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155666555502974 + 155666555502975.

It is an arithmetic number, because the mean of its divisors is an integer number (155666555502975).

Almost surely, 2^{311333111005949} is an apocalyptic number.

It is an amenable number.

311333111005949 is a deficient number, since it is larger than the sum of its proper divisors (1).

311333111005949 is an equidigital number, since it uses as much as digits as its factorization.

311333111005949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131220, while the sum is 44.

The spelling of 311333111005949 in words is "three hundred eleven trillion, three hundred thirty-three billion, one hundred eleven million, five thousand, nine hundred forty-nine".