431243243 has 4 divisors (see below), whose sum is σ = 431580648. Its totient is φ = 430905840.

The previous prime is 431243237. The next prime is 431243249. The reversal of 431243243 is 342342134.

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

It is an interprime number because it is at equal distance from previous prime (431243237) and next prime (431243249).

It is a cyclic number.

It is not a de Polignac number, because 431243243 - 2²⁸ = 162807787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431243249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166778 + ... + 169343.

It is an arithmetic number, because the mean of its divisors is an integer number (107895162).

Almost surely, 2^431243243 is an apocalyptic number.

431243243 is a deficient number, since it is larger than the sum of its proper divisors (337405).

431243243 is a wasteful number, since it uses less digits than its factorization.

431243243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337404.

The product of its digits is 6912, while the sum is 26.

The square root of 431243243 is about 20766.3969672161. The cubic root of 431243243 is about 755.5109580134.

Adding to 431243243 its reverse (342342134), we get a palindrome (773585377).

The spelling of 431243243 in words is "four hundred thirty-one million, two hundred forty-three thousand, two hundred forty-three".