116551231 has 2 divisors, whose sum is σ = 116551232. Its totient is φ = 116551230.

The previous prime is 116551229. The next prime is 116551249. The reversal of 116551231 is 132155611.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 116551231 - 2¹ = 116551229 is a prime.

It is a super-2 number, since 2×116551231² = 27168378895230722, which contains 22 as substring.

Together with 116551229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 116551196 and 116551205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116551271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58275615 + 58275616.

It is an arithmetic number, because the mean of its divisors is an integer number (58275616).

Almost surely, 2^116551231 is an apocalyptic number.

116551231 is a deficient number, since it is larger than the sum of its proper divisors (1).

116551231 is an equidigital number, since it uses as much as digits as its factorization.

116551231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900, while the sum is 25.

The square root of 116551231 is about 10795.8895418580. The cubic root of 116551231 is about 488.4711908997.

The spelling of 116551231 in words is "one hundred sixteen million, five hundred fifty-one thousand, two hundred thirty-one".