20303012233 has 4 divisors (see below), whose sum is σ = 23203442560. Its totient is φ = 17402581908.

The previous prime is 20303012231. The next prime is 20303012243. The reversal of 20303012233 is 33221030302.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 20303012233 - 2¹ = 20303012231 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 20303012233.

It is not an unprimeable number, because it can be changed into a prime (20303012231) 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, 1450215153 + ... + 1450215166.

It is an arithmetic number, because the mean of its divisors is an integer number (5800860640).

Almost surely, 2^20303012233 is an apocalyptic number.

It is an amenable number.

20303012233 is a deficient number, since it is larger than the sum of its proper divisors (2900430327).

20303012233 is an equidigital number, since it uses as much as digits as its factorization.

20303012233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900430326.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20303012233 its reverse (33221030302), we get a palindrome (53524042535).

The spelling of 20303012233 in words is "twenty billion, three hundred three million, twelve thousand, two hundred thirty-three".