20431252003 has 2 divisors, whose sum is σ = 20431252004. Its totient is φ = 20431252002.

The previous prime is 20431251949. The next prime is 20431252021. The reversal of 20431252003 is 30025213402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20431252003 is a prime.

It is not a weakly prime, because it can be changed into another prime (20431252033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215626001 + 10215626002.

It is an arithmetic number, because the mean of its divisors is an integer number (10215626002).

Almost surely, 2^20431252003 is an apocalyptic number.

20431252003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20431252003 is an equidigital number, since it uses as much as digits as its factorization.

20431252003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 20431252003 its reverse (30025213402), we get a palindrome (50456465405).

The spelling of 20431252003 in words is "twenty billion, four hundred thirty-one million, two hundred fifty-two thousand, three".