431244143 has 4 divisors (see below), whose sum is σ = 470448168. Its totient is φ = 392040120.

The previous prime is 431244127. The next prime is 431244161. The reversal of 431244143 is 341442134.

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

It is a cyclic number.

It is not a de Polignac number, because 431244143 - 2⁴ = 431244127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431244103) 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, 19601996 + ... + 19602017.

It is an arithmetic number, because the mean of its divisors is an integer number (117612042).

Almost surely, 2^431244143 is an apocalyptic number.

431244143 is a deficient number, since it is larger than the sum of its proper divisors (39204025).

431244143 is a wasteful number, since it uses less digits than its factorization.

431244143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39204024.

The product of its digits is 4608, while the sum is 26.

The square root of 431244143 is about 20766.4186368281. The cubic root of 431244143 is about 755.5114835941.

Adding to 431244143 its reverse (341442134), we get a palindrome (772686277).

The spelling of 431244143 in words is "four hundred thirty-one million, two hundred forty-four thousand, one hundred forty-three".