311116887 has 12 divisors (see below), whose sum is σ = 473043480. Its totient is φ = 196494768.

The previous prime is 311116877. The next prime is 311116891. The reversal of 311116887 is 788611113.

It is a happy number.

It is not a de Polignac number, because 311116887 - 2⁶ = 311116823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311116877) 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 in 11 ways as a sum of consecutive naturals, for example, 909528 + ... + 909869.

It is an arithmetic number, because the mean of its divisors is an integer number (39420290).

Almost surely, 2^311116887 is an apocalyptic number.

311116887 is a deficient number, since it is larger than the sum of its proper divisors (161926593).

311116887 is a wasteful number, since it uses less digits than its factorization.

311116887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819422 (or 1819419 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 311116887 is about 17638.5058040640. The cubic root of 311116887 is about 677.6017644643.

The spelling of 311116887 in words is "three hundred eleven million, one hundred sixteen thousand, eight hundred eighty-seven".