20320100233 has 4 divisors (see below), whose sum is σ = 20320771968. Its totient is φ = 20319428500.

The previous prime is 20320100231. The next prime is 20320100257. The reversal of 20320100233 is 33200102302.

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 20320100233 - 2¹ = 20320100231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20320100231) 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, 288241 + ... + 351742.

It is an arithmetic number, because the mean of its divisors is an integer number (5080192992).

Almost surely, 2^20320100233 is an apocalyptic number.

It is an amenable number.

20320100233 is a deficient number, since it is larger than the sum of its proper divisors (671735).

20320100233 is an equidigital number, since it uses as much as digits as its factorization.

20320100233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671734.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20320100233 its reverse (33200102302), we get a palindrome (53520202535).

The spelling of 20320100233 in words is "twenty billion, three hundred twenty million, one hundred thousand, two hundred thirty-three".