115431444 has 18 divisors (see below), whose sum is σ = 291785130. Its totient is φ = 38477136.

The previous prime is 115431427. The next prime is 115431451. The reversal of 115431444 is 444134511.

It can be written as a sum of positive squares in only one way, i.e., 112148100 + 3283344 = 10590^2 + 1812^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1603179 + ... + 1603250.

It is an arithmetic number, because the mean of its divisors is an integer number (16210285).

Almost surely, 2^115431444 is an apocalyptic number.

It is an amenable number.

115431444 is an abundant number, since it is smaller than the sum of its proper divisors (176353686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115431444 is a wasteful number, since it uses less digits than its factorization.

115431444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206439 (or 3206434 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 115431444 is about 10743.9026428947. The cubic root of 115431444 is about 486.9017956407.

Adding to 115431444 its reverse (444134511), we get a palindrome (559565955).

The spelling of 115431444 in words is "one hundred fifteen million, four hundred thirty-one thousand, four hundred forty-four".