2133240433 has 4 divisors (see below), whose sum is σ = 2140941940. Its totient is φ = 2125538928.

The previous prime is 2133240419. The next prime is 2133240457. The reversal of 2133240433 is 3340423312.

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 238640704 + 1894599729 = 15448^2 + 43527^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133240433 - 2⁵ = 2133240401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2133240398 and 2133240407.

It is not an unprimeable number, because it can be changed into a prime (2133240533) 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, 3850338 + ... + 3850891.

It is an arithmetic number, because the mean of its divisors is an integer number (535235485).

Almost surely, 2^2133240433 is an apocalyptic number.

It is an amenable number.

2133240433 is a deficient number, since it is larger than the sum of its proper divisors (7701507).

2133240433 is an equidigital number, since it uses as much as digits as its factorization.

2133240433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7701506.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 2133240433 is about 46187.0158486127. The cubic root of 2133240433 is about 1287.3004928934.

Adding to 2133240433 its reverse (3340423312), we get a palindrome (5473663745).

The spelling of 2133240433 in words is "two billion, one hundred thirty-three million, two hundred forty thousand, four hundred thirty-three".