115543313 has 4 divisors (see below), whose sum is σ = 121624560. Its totient is φ = 109462068.

The previous prime is 115543303. The next prime is 115543321. The reversal of 115543313 is 313345511.

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-115543313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115543303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3040595 + ... + 3040632.

It is an arithmetic number, because the mean of its divisors is an integer number (30406140).

Almost surely, 2^115543313 is an apocalyptic number.

It is an amenable number.

115543313 is a deficient number, since it is larger than the sum of its proper divisors (6081247).

115543313 is an equidigital number, since it uses as much as digits as its factorization.

115543313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6081246.

The product of its digits is 2700, while the sum is 26.

The square root of 115543313 is about 10749.1075443499. The cubic root of 115543313 is about 487.0590365348.

Adding to 115543313 its reverse (313345511), we get a palindrome (428888824).

The spelling of 115543313 in words is "one hundred fifteen million, five hundred forty-three thousand, three hundred thirteen".