20430113403 has 8 divisors (see below), whose sum is σ = 31131601408. Its totient is φ = 11674350504.

The previous prime is 20430113383. The next prime is 20430113419. The reversal of 20430113403 is 30431103402.

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

It is not a de Polignac number, because 20430113403 - 2⁵ = 20430113371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 972862543 = 20430113403 / (2 + 0 + 4 + 3 + 0 + 1 + 1 + 3 + 4 + 0 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20430113403.

It is not an unprimeable number, because it can be changed into a prime (20430103403) 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 7 ways as a sum of consecutive naturals, for example, 486431251 + ... + 486431292.

It is an arithmetic number, because the mean of its divisors is an integer number (3891450176).

Almost surely, 2^20430113403 is an apocalyptic number.

20430113403 is a deficient number, since it is larger than the sum of its proper divisors (10701488005).

20430113403 is an equidigital number, since it uses as much as digits as its factorization.

20430113403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972862553.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20430113403 its reverse (30431103402), we get a palindrome (50861216805).

The spelling of 20430113403 in words is "twenty billion, four hundred thirty million, one hundred thirteen thousand, four hundred three".