431115243 has 32 divisors (see below), whose sum is σ = 656624640. Its totient is φ = 249575040.

The previous prime is 431115221. The next prime is 431115283. The reversal of 431115243 is 342511134.

It is a happy number.

It is not a de Polignac number, because 431115243 - 2⁵ = 431115211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (431115203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50778 + ... + 58656.

It is an arithmetic number, because the mean of its divisors is an integer number (20519520).

Almost surely, 2^431115243 is an apocalyptic number.

431115243 is a deficient number, since it is larger than the sum of its proper divisors (225509397).

431115243 is a wasteful number, since it uses less digits than its factorization.

431115243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7979.

The product of its digits is 1440, while the sum is 24.

The square root of 431115243 is about 20763.3148365091. The cubic root of 431115243 is about 755.4362013081.

Adding to 431115243 its reverse (342511134), we get a palindrome (773626377).

The spelling of 431115243 in words is "four hundred thirty-one million, one hundred fifteen thousand, two hundred forty-three".