116691311 has 12 divisors (see below), whose sum is σ = 129477096. Its totient is φ = 105079920.

The previous prime is 116691299. The next prime is 116691313. The reversal of 116691311 is 113196611.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-116691311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116691313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8441 + ... + 17453.

It is an arithmetic number, because the mean of its divisors is an integer number (10789758).

Almost surely, 2^116691311 is an apocalyptic number.

116691311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

116691311 is a deficient number, since it is larger than the sum of its proper divisors (12785785).

116691311 is a wasteful number, since it uses less digits than its factorization.

116691311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9142 (or 9131 counting only the distinct ones).

The product of its digits is 972, while the sum is 29.

The square root of 116691311 is about 10802.3752480647. The cubic root of 116691311 is about 488.6668063080. Note that the first 3 decimals are identical.

The spelling of 116691311 in words is "one hundred sixteen million, six hundred ninety-one thousand, three hundred eleven".