115761331 has 4 divisors (see below), whose sum is σ = 132298672. Its totient is φ = 99223992.

The previous prime is 115761293. The next prime is 115761341. The reversal of 115761331 is 133167511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133167511 = 17 ⋅7833383.

It is not a de Polignac number, because 115761331 - 2⁹ = 115760819 is a prime.

It is a super-2 number, since 2×115761331² = 26801371509783122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115761331.

It is not an unprimeable number, because it can be changed into a prime (115761341) 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, 8268660 + ... + 8268673.

It is an arithmetic number, because the mean of its divisors is an integer number (33074668).

Almost surely, 2^115761331 is an apocalyptic number.

115761331 is a deficient number, since it is larger than the sum of its proper divisors (16537341).

115761331 is an equidigital number, since it uses as much as digits as its factorization.

115761331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16537340.

The product of its digits is 1890, while the sum is 28.

The square root of 115761331 is about 10759.2439790164. The cubic root of 115761331 is about 487.3651870046.

The spelling of 115761331 in words is "one hundred fifteen million, seven hundred sixty-one thousand, three hundred thirty-one".