20243003403 has 32 divisors (see below), whose sum is σ = 31611419136. Its totient is φ = 11281390848.

The previous prime is 20243003387. The next prime is 20243003479. The reversal of 20243003403 is 30430034202.

It is not a de Polignac number, because 20243003403 - 2⁴ = 20243003387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 20243003403.

It is not an unprimeable number, because it can be changed into a prime (20243007403) 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 31 ways as a sum of consecutive naturals, for example, 594775 + ... + 627887.

It is an arithmetic number, because the mean of its divisors is an integer number (987856848).

Almost surely, 2^20243003403 is an apocalyptic number.

20243003403 is a deficient number, since it is larger than the sum of its proper divisors (11368415733).

20243003403 is a wasteful number, since it uses less digits than its factorization.

20243003403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33843.

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 20243003403 its reverse (30430034202), we get a palindrome (50673037605).

The spelling of 20243003403 in words is "twenty billion, two hundred forty-three million, three thousand, four hundred three".