2143240433 has 2 divisors, whose sum is σ = 2143240434. Its totient is φ = 2143240432.

The previous prime is 2143240423. The next prime is 2143240453. The reversal of 2143240433 is 3340423412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1745317729 + 397922704 = 41777^2 + 19948^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143240433 - 2¹⁰ = 2143239409 is a prime.

It is not a weakly prime, because it can be changed into another prime (2143240423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071620216 + 1071620217.

It is an arithmetic number, because the mean of its divisors is an integer number (1071620217).

Almost surely, 2^2143240433 is an apocalyptic number.

It is an amenable number.

2143240433 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143240433 is an equidigital number, since it uses as much as digits as its factorization.

2143240433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 2143240433 is about 46295.1448102282. The cubic root of 2143240433 is about 1289.3088525710.

Adding to 2143240433 its reverse (3340423412), we get a palindrome (5483663845).

The spelling of 2143240433 in words is "two billion, one hundred forty-three million, two hundred forty thousand, four hundred thirty-three".