115431543 has 12 divisors (see below), whose sum is σ = 167471928. Its totient is φ = 76614000.

The previous prime is 115431541. The next prime is 115431557. The reversal of 115431543 is 345134511.

It is a happy number.

115431543 is a `hidden beast` number, since 115 + 4 + 3 + 1 + 543 = 666.

It is not a de Polignac number, because 115431543 - 2¹ = 115431541 is a prime.

It is a super-2 number, since 2×115431543² = 26648882238721698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115431541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26208 + ... + 30293.

It is an arithmetic number, because the mean of its divisors is an integer number (13955994).

Almost surely, 2^115431543 is an apocalyptic number.

115431543 is a deficient number, since it is larger than the sum of its proper divisors (52040385).

115431543 is a wasteful number, since it uses less digits than its factorization.

115431543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56734 (or 56731 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 115431543 is about 10743.9072501581. The cubic root of 115431543 is about 486.9019348381.

The spelling of 115431543 in words is "one hundred fifteen million, four hundred thirty-one thousand, five hundred forty-three".