20023634233 has 4 divisors (see below), whose sum is σ = 20052612688. Its totient is φ = 19994655780.

The previous prime is 20023634219. The next prime is 20023634249. The reversal of 20023634233 is 33243632002.

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 20023634233 - 2¹⁷ = 20023503161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20023634203) 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, 14488191 + ... + 14489572.

It is an arithmetic number, because the mean of its divisors is an integer number (5013153172).

Almost surely, 2^20023634233 is an apocalyptic number.

It is an amenable number.

20023634233 is a deficient number, since it is larger than the sum of its proper divisors (28978455).

20023634233 is an equidigital number, since it uses as much as digits as its factorization.

20023634233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28978454.

The product of its (nonzero) digits is 15552, while the sum is 28.

The spelling of 20023634233 in words is "twenty billion, twenty-three million, six hundred thirty-four thousand, two hundred thirty-three".