2143440133 has 4 divisors (see below), whose sum is σ = 2167523820. Its totient is φ = 2119356448.

The previous prime is 2143440119. The next prime is 2143440139. The reversal of 2143440133 is 3310443412.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1261528324 + 881911809 = 35518^2 + 29697^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143440133 - 2²⁹ = 1606569221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2143440098 and 2143440107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143440139) 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, 12041710 + ... + 12041887.

It is an arithmetic number, because the mean of its divisors is an integer number (541880955).

Almost surely, 2^2143440133 is an apocalyptic number.

It is an amenable number.

2143440133 is a deficient number, since it is larger than the sum of its proper divisors (24083687).

2143440133 is an equidigital number, since it uses as much as digits as its factorization.

2143440133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24083686.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 2143440133 is about 46297.3015736339. The cubic root of 2143440133 is about 1289.3488958278.

Adding to 2143440133 its reverse (3310443412), we get a palindrome (5453883545).

The spelling of 2143440133 in words is "two billion, one hundred forty-three million, four hundred forty thousand, one hundred thirty-three".