20203432003103 has 4 divisors (see below), whose sum is σ = 20348780434920. Its totient is φ = 20058083571288.

The previous prime is 20203432003087. The next prime is 20203432003187. The reversal of 20203432003103 is 30130023430202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20203432003103 - 2⁴ = 20203432003087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203432003903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72674215700 + ... + 72674215977.

It is an arithmetic number, because the mean of its divisors is an integer number (5087195108730).

Almost surely, 2^{20203432003103} is an apocalyptic number.

20203432003103 is a deficient number, since it is larger than the sum of its proper divisors (145348431817).

20203432003103 is a wasteful number, since it uses less digits than its factorization.

20203432003103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145348431816.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20203432003103 its reverse (30130023430202), we get a palindrome (50333455433305).

The spelling of 20203432003103 in words is "twenty trillion, two hundred three billion, four hundred thirty-two million, three thousand, one hundred three".