115889231 has 2 divisors, whose sum is σ = 115889232. Its totient is φ = 115889230.

The previous prime is 115889219. The next prime is 115889261. The reversal of 115889231 is 132988511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115889231 - 2¹⁸ = 115627087 is a prime.

It is a super-2 number, since 2×115889231² = 26860627723542722, 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 (115889201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57944615 + 57944616.

It is an arithmetic number, because the mean of its divisors is an integer number (57944616).

Almost surely, 2^115889231 is an apocalyptic number.

115889231 is a deficient number, since it is larger than the sum of its proper divisors (1).

115889231 is an equidigital number, since it uses as much as digits as its factorization.

115889231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 38.

The square root of 115889231 is about 10765.1860643465. The cubic root of 115889231 is about 487.5446109515.

The spelling of 115889231 in words is "one hundred fifteen million, eight hundred eighty-nine thousand, two hundred thirty-one".