20310321002203 has 4 divisors (see below), whose sum is σ = 20310341386608. Its totient is φ = 20310300617800.

The previous prime is 20310321002189. The next prime is 20310321002219. The reversal of 20310321002203 is 30220012301302.

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 20310321002203 - 2²⁹ = 20309784131291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20310321002233) 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, 8616448 + ... + 10717453.

It is an arithmetic number, because the mean of its divisors is an integer number (5077585346652).

Almost surely, 2^{20310321002203} is an apocalyptic number.

20310321002203 is a deficient number, since it is larger than the sum of its proper divisors (20384405).

20310321002203 is a wasteful number, since it uses less digits than its factorization.

20310321002203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20384404.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20310321002203 its reverse (30220012301302), we get a palindrome (50530333303505).

The spelling of 20310321002203 in words is "twenty trillion, three hundred ten billion, three hundred twenty-one million, two thousand, two hundred three".