20003503431 has 8 divisors (see below), whose sum is σ = 26695744240. Its totient is φ = 13323465792.

The previous prime is 20003503423. The next prime is 20003503433. The reversal of 20003503431 is 13430530002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20003503431 - 2³ = 20003503423 is a prime.

It is a super-2 number, since 2×20003503431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20003503398 and 20003503407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003503433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3046966 + ... + 3053523.

It is an arithmetic number, because the mean of its divisors is an integer number (3336968030).

Almost surely, 2^20003503431 is an apocalyptic number.

20003503431 is a deficient number, since it is larger than the sum of its proper divisors (6692240809).

20003503431 is a wasteful number, since it uses less digits than its factorization.

20003503431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6101585.

The product of its (nonzero) digits is 1080, while the sum is 21.

The spelling of 20003503431 in words is "twenty billion, three million, five hundred three thousand, four hundred thirty-one".