431345143 has 4 divisors (see below), whose sum is σ = 431588848. Its totient is φ = 431101440.

The previous prime is 431345137. The next prime is 431345147. The reversal of 431345143 is 341543134.

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 431345143 - 2¹⁷ = 431214071 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 (431345147) 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, 119178 + ... + 122743.

It is an arithmetic number, because the mean of its divisors is an integer number (107897212).

Almost surely, 2^431345143 is an apocalyptic number.

431345143 is a deficient number, since it is larger than the sum of its proper divisors (243705).

431345143 is a wasteful number, since it uses less digits than its factorization.

431345143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243704.

The product of its digits is 8640, while the sum is 28.

The square root of 431345143 is about 20768.8503052047. The cubic root of 431345143 is about 755.5704607842.

Adding to 431345143 its reverse (341543134), we get a palindrome (772888277).

The spelling of 431345143 in words is "four hundred thirty-one million, three hundred forty-five thousand, one hundred forty-three".