311808041 has 2 divisors, whose sum is σ = 311808042. Its totient is φ = 311808040.

The previous prime is 311808037. The next prime is 311808059. The reversal of 311808041 is 140808113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274598041 + 37210000 = 16571^2 + 6100^2 .

It is a cyclic number.

It is not a de Polignac number, because 311808041 - 2² = 311808037 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311808041.

It is not a weakly prime, because it can be changed into another prime (311808001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155904020 + 155904021.

It is an arithmetic number, because the mean of its divisors is an integer number (155904021).

Almost surely, 2^311808041 is an apocalyptic number.

It is an amenable number.

311808041 is a deficient number, since it is larger than the sum of its proper divisors (1).

311808041 is an equidigital number, since it uses as much as digits as its factorization.

311808041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 311808041 is about 17658.0871274326. The cubic root of 311808041 is about 678.1031631525.

The spelling of 311808041 in words is "three hundred eleven million, eight hundred eight thousand, forty-one".