115135131305 has 4 divisors (see below), whose sum is σ = 138162157572. Its totient is φ = 92108105040.

The previous prime is 115135131229. The next prime is 115135131313. The reversal of 115135131305 is 503131531511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38430505369 + 76704625936 = 196037^2 + 276956^2 .

It is not a de Polignac number, because 115135131305 - 2¹² = 115135127209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11513513126 + ... + 11513513135.

It is an arithmetic number, because the mean of its divisors is an integer number (34540539393).

Almost surely, 2^115135131305 is an apocalyptic number.

It is an amenable number.

115135131305 is a deficient number, since it is larger than the sum of its proper divisors (23027026267).

115135131305 is an equidigital number, since it uses as much as digits as its factorization.

115135131305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23027026266.

The product of its (nonzero) digits is 3375, while the sum is 29.

Adding to 115135131305 its reverse (503131531511), we get a palindrome (618266662816).

The spelling of 115135131305 in words is "one hundred fifteen billion, one hundred thirty-five million, one hundred thirty-one thousand, three hundred five".