431438143 has 4 divisors (see below), whose sum is σ = 432412488. Its totient is φ = 430463800.

The previous prime is 431438141. The next prime is 431438159. The reversal of 431438143 is 341834134.

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 431438143 - 2¹ = 431438141 is a prime.

It is a super-2 number, since 2×431438143² = 372277742470576898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431438141) 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, 486508 + ... + 487393.

It is an arithmetic number, because the mean of its divisors is an integer number (108103122).

Almost surely, 2^431438143 is an apocalyptic number.

431438143 is a deficient number, since it is larger than the sum of its proper divisors (974345).

431438143 is an equidigital number, since it uses as much as digits as its factorization.

431438143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974344.

The product of its digits is 13824, while the sum is 31.

The square root of 431438143 is about 20771.0891144398. The cubic root of 431438143 is about 755.6247583729.

The spelling of 431438143 in words is "four hundred thirty-one million, four hundred thirty-eight thousand, one hundred forty-three".