20434202103 has 8 divisors (see below), whose sum is σ = 31137831808. Its totient is φ = 11676686904.

The previous prime is 20434202077. The next prime is 20434202119. The reversal of 20434202103 is 30120243402.

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

It is not a de Polignac number, because 20434202103 - 2⁵ = 20434202071 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: 973057243 = 20434202103 / (2 + 0 + 4 + 3 + 4 + 2 + 0 + 2 + 1 + 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 20434202103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434202143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486528601 + ... + 486528642.

It is an arithmetic number, because the mean of its divisors is an integer number (3892228976).

Almost surely, 2^20434202103 is an apocalyptic number.

20434202103 is a deficient number, since it is larger than the sum of its proper divisors (10703629705).

20434202103 is an equidigital number, since it uses as much as digits as its factorization.

20434202103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973057253.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20434202103 its reverse (30120243402), we get a palindrome (50554445505).

The spelling of 20434202103 in words is "twenty billion, four hundred thirty-four million, two hundred two thousand, one hundred three".