118313791 has 2 divisors, whose sum is σ = 118313792. Its totient is φ = 118313790.

The previous prime is 118313777. The next prime is 118313807. The reversal of 118313791 is 197313811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118313791 - 2¹⁷ = 118182719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118313191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59156895 + 59156896.

It is an arithmetic number, because the mean of its divisors is an integer number (59156896).

Almost surely, 2^118313791 is an apocalyptic number.

118313791 is a deficient number, since it is larger than the sum of its proper divisors (1).

118313791 is an equidigital number, since it uses as much as digits as its factorization.

118313791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 34.

The square root of 118313791 is about 10877.2143033039. The cubic root of 118313791 is about 490.9212033227.

The spelling of 118313791 in words is "one hundred eighteen million, three hundred thirteen thousand, seven hundred ninety-one".