116989231 has 2 divisors, whose sum is σ = 116989232. Its totient is φ = 116989230.

The previous prime is 116989177. The next prime is 116989237. The reversal of 116989231 is 132989611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 116989231 - 2²¹ = 114892079 is a prime.

It is a super-2 number, since 2×116989231² = 27372960339942722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116989237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58494615 + 58494616.

It is an arithmetic number, because the mean of its divisors is an integer number (58494616).

Almost surely, 2^116989231 is an apocalyptic number.

116989231 is a deficient number, since it is larger than the sum of its proper divisors (1).

116989231 is an equidigital number, since it uses as much as digits as its factorization.

116989231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 40.

The square root of 116989231 is about 10816.1560177357. The cubic root of 116989231 is about 489.0823182386.

The spelling of 116989231 in words is "one hundred sixteen million, nine hundred eighty-nine thousand, two hundred thirty-one".