20313103233 has 4 divisors (see below), whose sum is σ = 27084137648. Its totient is φ = 13542068820.

The previous prime is 20313103199. The next prime is 20313103241. The reversal of 20313103233 is 33230131302.

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 20313103233 - 2¹⁷ = 20312972161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20313103253) 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, 3385517203 + ... + 3385517208.

It is an arithmetic number, because the mean of its divisors is an integer number (6771034412).

Almost surely, 2^20313103233 is an apocalyptic number.

It is an amenable number.

20313103233 is a deficient number, since it is larger than the sum of its proper divisors (6771034415).

20313103233 is an equidigital number, since it uses as much as digits as its factorization.

20313103233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6771034414.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20313103233 its reverse (33230131302), we get a palindrome (53543234535).

The spelling of 20313103233 in words is "twenty billion, three hundred thirteen million, one hundred three thousand, two hundred thirty-three".