311255653 has 2 divisors, whose sum is σ = 311255654. Its totient is φ = 311255652.

The previous prime is 311255603. The next prime is 311255657. The reversal of 311255653 is 356552113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 284866884 + 26388769 = 16878^2 + 5137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311255653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311255657) 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, 155627826 + 155627827.

It is an arithmetic number, because the mean of its divisors is an integer number (155627827).

Almost surely, 2^311255653 is an apocalyptic number.

It is an amenable number.

311255653 is a deficient number, since it is larger than the sum of its proper divisors (1).

311255653 is an equidigital number, since it uses as much as digits as its factorization.

311255653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13500, while the sum is 31.

The square root of 311255653 is about 17642.4389753798. The cubic root of 311255653 is about 677.7024919981.

The spelling of 311255653 in words is "three hundred eleven million, two hundred fifty-five thousand, six hundred fifty-three".