116233991 has 2 divisors, whose sum is σ = 116233992. Its totient is φ = 116233990.

The previous prime is 116233987. The next prime is 116234021. The reversal of 116233991 is 199332611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 116233991 - 2² = 116233987 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116233921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58116995 + 58116996.

It is an arithmetic number, because the mean of its divisors is an integer number (58116996).

Almost surely, 2^116233991 is an apocalyptic number.

116233991 is a deficient number, since it is larger than the sum of its proper divisors (1).

116233991 is an equidigital number, since it uses as much as digits as its factorization.

116233991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 35.

The square root of 116233991 is about 10781.1869012646. The cubic root of 116233991 is about 488.0275993864.

It can be divided in two parts, 1162 and 33991, that added together give a palindrome (35153).

The spelling of 116233991 in words is "one hundred sixteen million, two hundred thirty-three thousand, nine hundred ninety-one".