311000077 has 2 divisors, whose sum is σ = 311000078. Its totient is φ = 311000076.

The previous prime is 310999993. The next prime is 311000099. The reversal of 311000077 is 770000113.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 277522281 + 33477796 = 16659^2 + 5786^2 .

It is a cyclic number.

It is not a de Polignac number, because 311000077 - 2²³ = 302611469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311006077) 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, 155500038 + 155500039.

It is an arithmetic number, because the mean of its divisors is an integer number (155500039).

Almost surely, 2^311000077 is an apocalyptic number.

It is an amenable number.

311000077 is a deficient number, since it is larger than the sum of its proper divisors (1).

311000077 is an equidigital number, since it uses as much as digits as its factorization.

311000077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147, while the sum is 19.

The square root of 311000077 is about 17635.1942716830. The cubic root of 311000077 is about 677.5169511424.

The spelling of 311000077 in words is "three hundred eleven million, seventy-seven", and thus it is an aban number.