21300031203 has 16 divisors (see below), whose sum is σ = 31819213056. Its totient is φ = 12560214240.

The previous prime is 21300031141. The next prime is 21300031213. The reversal of 21300031203 is 30213000312.

It is not a de Polignac number, because 21300031203 - 2⁶ = 21300031139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21300031213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8721151 + ... + 8723592.

It is an arithmetic number, because the mean of its divisors is an integer number (1988700816).

Almost surely, 2^21300031203 is an apocalyptic number.

21300031203 is a deficient number, since it is larger than the sum of its proper divisors (10519181853).

21300031203 is a wasteful number, since it uses less digits than its factorization.

21300031203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17444794.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21300031203 its reverse (30213000312), we get a palindrome (51513031515).

The spelling of 21300031203 in words is "twenty-one billion, three hundred million, thirty-one thousand, two hundred three".