20431273303 has 16 divisors (see below), whose sum is σ = 23499927360. Its totient is φ = 17400268800.

The previous prime is 20431273279. The next prime is 20431273333. The reversal of 20431273303 is 30337213402.

It is a cyclic number.

It is not a de Polignac number, because 20431273303 - 2⁵ = 20431273271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431273333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1550583 + ... + 1563703.

It is an arithmetic number, because the mean of its divisors is an integer number (1468745460).

Almost surely, 2^20431273303 is an apocalyptic number.

20431273303 is a deficient number, since it is larger than the sum of its proper divisors (3068654057).

20431273303 is a wasteful number, since it uses less digits than its factorization.

20431273303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14538.

The product of its (nonzero) digits is 9072, while the sum is 28.

Adding to 20431273303 its reverse (30337213402), we get a palindrome (50768486705).

The spelling of 20431273303 in words is "twenty billion, four hundred thirty-one million, two hundred seventy-three thousand, three hundred three".