116112991 has 2 divisors, whose sum is σ = 116112992. Its totient is φ = 116112990.

The previous prime is 116112973. The next prime is 116113001. The reversal of 116112991 is 199211611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 116112991 - 2⁵ = 116112959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116112791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58056495 + 58056496.

It is an arithmetic number, because the mean of its divisors is an integer number (58056496).

Almost surely, 2^116112991 is an apocalyptic number.

116112991 is a deficient number, since it is larger than the sum of its proper divisors (1).

116112991 is an equidigital number, since it uses as much as digits as its factorization.

116112991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 31.

The square root of 116112991 is about 10775.5738130273. The cubic root of 116112991 is about 487.8581944307.

The spelling of 116112991 in words is "one hundred sixteen million, one hundred twelve thousand, nine hundred ninety-one".