116116381 has 4 divisors (see below), whose sum is σ = 116143164. Its totient is φ = 116089600.

The previous prime is 116116373. The next prime is 116116411. The reversal of 116116381 is 183611611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105390756 + 10725625 = 10266^2 + 3275^2 .

It is a cyclic number.

It is not a de Polignac number, because 116116381 - 2³ = 116116373 is a prime.

It is a super-2 number, since 2×116116381² = 26966027873074322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116116321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5230 + ... + 16111.

It is an arithmetic number, because the mean of its divisors is an integer number (29035791).

Almost surely, 2^116116381 is an apocalyptic number.

It is an amenable number.

116116381 is a deficient number, since it is larger than the sum of its proper divisors (26783).

116116381 is an equidigital number, since it uses as much as digits as its factorization.

116116381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26782.

The product of its digits is 864, while the sum is 28.

The square root of 116116381 is about 10775.7311120870. The cubic root of 116116381 is about 487.8629421716.

Adding to 116116381 its reverse (183611611), we get a palindrome (299727992).

The spelling of 116116381 in words is "one hundred sixteen million, one hundred sixteen thousand, three hundred eighty-one".