2143431203 has 4 divisors (see below), whose sum is σ = 2236623888. Its totient is φ = 2050238520.

The previous prime is 2143431181. The next prime is 2143431221. The reversal of 2143431203 is 3021343412.

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 2143431203 - 2¹⁶ = 2143365667 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 93192661 = 2143431203 / (2 + 1 + 4 + 3 + 4 + 3 + 1 + 2 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143431253) 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, 46596308 + ... + 46596353.

It is an arithmetic number, because the mean of its divisors is an integer number (559155972).

Almost surely, 2^2143431203 is an apocalyptic number.

2143431203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2143431203 is a deficient number, since it is larger than the sum of its proper divisors (93192685).

2143431203 is an equidigital number, since it uses as much as digits as its factorization.

2143431203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93192684.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 2143431203 is about 46297.2051316275. The cubic root of 2143431203 is about 1289.3471052636.

Adding to 2143431203 its reverse (3021343412), we get a palindrome (5164774615).

The spelling of 2143431203 in words is "two billion, one hundred forty-three million, four hundred thirty-one thousand, two hundred three".