20130431203 has 2 divisors, whose sum is σ = 20130431204. Its totient is φ = 20130431202.

The previous prime is 20130431173. The next prime is 20130431257. The reversal of 20130431203 is 30213403102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20130431203 - 2²⁹ = 19593560291 is a prime.

It is not a weakly prime, because it can be changed into another prime (20130431263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065215601 + 10065215602.

It is an arithmetic number, because the mean of its divisors is an integer number (10065215602).

Almost surely, 2^20130431203 is an apocalyptic number.

20130431203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130431203 is an equidigital number, since it uses as much as digits as its factorization.

20130431203 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 20130431203 its reverse (30213403102), we get a palindrome (50343834305).

The spelling of 20130431203 in words is "twenty billion, one hundred thirty million, four hundred thirty-one thousand, two hundred three".