20231213203 has 2 divisors, whose sum is σ = 20231213204. Its totient is φ = 20231213202.

The previous prime is 20231213183. The next prime is 20231213209. The reversal of 20231213203 is 30231213202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20231213203 is a prime.

It is not a weakly prime, because it can be changed into another prime (20231213209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115606601 + 10115606602.

It is an arithmetic number, because the mean of its divisors is an integer number (10115606602).

Almost surely, 2^20231213203 is an apocalyptic number.

20231213203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20231213203 is an equidigital number, since it uses as much as digits as its factorization.

20231213203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20231213203 its reverse (30231213202), we get a palindrome (50462426405).

Subtracting 20231213203 from its reverse (30231213202), we obtain a palindrome (9999999999).

The spelling of 20231213203 in words is "twenty billion, two hundred thirty-one million, two hundred thirteen thousand, two hundred three".