311037149 has 2 divisors, whose sum is σ = 311037150. Its totient is φ = 311037148.

The previous prime is 311037143. The next prime is 311037169. The reversal of 311037149 is 941730113.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308248249 + 2788900 = 17557^2 + 1670^2 .

It is a cyclic number.

It is not a de Polignac number, because 311037149 - 2¹² = 311033053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311037143) 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, 155518574 + 155518575.

It is an arithmetic number, because the mean of its divisors is an integer number (155518575).

Almost surely, 2^311037149 is an apocalyptic number.

It is an amenable number.

311037149 is a deficient number, since it is larger than the sum of its proper divisors (1).

311037149 is an equidigital number, since it uses as much as digits as its factorization.

311037149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 311037149 is about 17636.2453203623. The cubic root of 311037149 is about 677.5438706540.

The spelling of 311037149 in words is "three hundred eleven million, thirty-seven thousand, one hundred forty-nine".