311010021149 has 2 divisors, whose sum is σ = 311010021150. Its totient is φ = 311010021148.

The previous prime is 311010021121. The next prime is 311010021211. The reversal of 311010021149 is 941120010113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303815928025 + 7194093124 = 551195^2 + 84818^2 .

It is a cyclic number.

It is not a de Polignac number, because 311010021149 - 2¹² = 311010017053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311010021109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155505010574 + 155505010575.

It is an arithmetic number, because the mean of its divisors is an integer number (155505010575).

Almost surely, 2^311010021149 is an apocalyptic number.

It is an amenable number.

311010021149 is a deficient number, since it is larger than the sum of its proper divisors (1).

311010021149 is an equidigital number, since it uses as much as digits as its factorization.

311010021149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 311010021149 in words is "three hundred eleven billion, ten million, twenty-one thousand, one hundred forty-nine".