311300137 has 2 divisors, whose sum is σ = 311300138. Its totient is φ = 311300136.

The previous prime is 311300131. The next prime is 311300159. The reversal of 311300137 is 731003113.

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., 297079696 + 14220441 = 17236^2 + 3771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311300137 is a prime.

It is not a weakly prime, because it can be changed into another prime (311300131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155650068 + 155650069.

It is an arithmetic number, because the mean of its divisors is an integer number (155650069).

Almost surely, 2^311300137 is an apocalyptic number.

It is an amenable number.

311300137 is a deficient number, since it is larger than the sum of its proper divisors (1).

311300137 is an equidigital number, since it uses as much as digits as its factorization.

311300137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189, while the sum is 19.

The square root of 311300137 is about 17643.6996403815. The cubic root of 311300137 is about 677.7347757294.

The spelling of 311300137 in words is "three hundred eleven million, three hundred thousand, one hundred thirty-seven".