2153434233 has 4 divisors (see below), whose sum is σ = 2871245648. Its totient is φ = 1435622820.

The previous prime is 2153434229. The next prime is 2153434243. The reversal of 2153434233 is 3324343512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2153434233 - 2² = 2153434229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2153434233.

It is not an unprimeable number, because it can be changed into a prime (2153434243) 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, 358905703 + ... + 358905708.

It is an arithmetic number, because the mean of its divisors is an integer number (717811412).

Almost surely, 2^2153434233 is an apocalyptic number.

It is an amenable number.

2153434233 is a deficient number, since it is larger than the sum of its proper divisors (717811415).

2153434233 is an equidigital number, since it uses as much as digits as its factorization.

2153434233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717811414.

The product of its digits is 25920, while the sum is 30.

The square root of 2153434233 is about 46405.1099880175. The cubic root of 2153434233 is about 1291.3497146501.

Adding to 2153434233 its reverse (3324343512), we get a palindrome (5477777745).

The spelling of 2153434233 in words is "two billion, one hundred fifty-three million, four hundred thirty-four thousand, two hundred thirty-three".