115813229 has 4 divisors (see below), whose sum is σ = 132357984. Its totient is φ = 99268476.

The previous prime is 115813223. The next prime is 115813249. The reversal of 115813229 is 922318511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115813229 is a prime.

It is a super-2 number, since 2×115813229² = 26825408022812882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 115813195 and 115813204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115813223) 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 in 3 ways as a sum of consecutive naturals, for example, 8272367 + ... + 8272380.

It is an arithmetic number, because the mean of its divisors is an integer number (33089496).

Almost surely, 2^115813229 is an apocalyptic number.

It is an amenable number.

115813229 is a deficient number, since it is larger than the sum of its proper divisors (16544755).

115813229 is an equidigital number, since it uses as much as digits as its factorization.

115813229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16544754.

The product of its digits is 4320, while the sum is 32.

The square root of 115813229 is about 10761.6554953223. The cubic root of 115813229 is about 487.4380078086.

The spelling of 115813229 in words is "one hundred fifteen million, eight hundred thirteen thousand, two hundred twenty-nine".