20131210203 has 24 divisors (see below), whose sum is σ = 29101699440. Its totient is φ = 12372871680.

The previous prime is 20131210189. The next prime is 20131210217. The reversal of 20131210203 is 30201213102.

It is an interprime number because it is at equal distance from previous prime (20131210189) and next prime (20131210217).

It is not a de Polignac number, because 20131210203 - 2⁶ = 20131210139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20131210243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 385623 + ... + 434703.

It is an arithmetic number, because the mean of its divisors is an integer number (1212570810).

Almost surely, 2^20131210203 is an apocalyptic number.

20131210203 is a deficient number, since it is larger than the sum of its proper divisors (8970489237).

20131210203 is a wasteful number, since it uses less digits than its factorization.

20131210203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49919 (or 49906 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20131210203 its reverse (30201213102), we get a palindrome (50332423305).

The spelling of 20131210203 in words is "twenty billion, one hundred thirty-one million, two hundred ten thousand, two hundred three".