115583231 has 2 divisors, whose sum is σ = 115583232. Its totient is φ = 115583230.

The previous prime is 115583191. The next prime is 115583233. The reversal of 115583231 is 132385511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115583231 is a prime.

It is a super-2 number, since 2×115583231² = 26718966576798722, which contains 22 as substring.

Together with 115583233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 115583194 and 115583203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115583233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57791615 + 57791616.

It is an arithmetic number, because the mean of its divisors is an integer number (57791616).

Almost surely, 2^115583231 is an apocalyptic number.

115583231 is a deficient number, since it is larger than the sum of its proper divisors (1).

115583231 is an equidigital number, since it uses as much as digits as its factorization.

115583231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 29.

The square root of 115583231 is about 10750.9641893181. The cubic root of 115583231 is about 487.1151199306.

The spelling of 115583231 in words is "one hundred fifteen million, five hundred eighty-three thousand, two hundred thirty-one".