21300103031013 has 24 divisors (see below), whose sum is σ = 32157921781440. Its totient is φ = 13560074193600.

The previous prime is 21300103030981. The next prime is 21300103031021. The reversal of 21300103031013 is 31013030100312.

It is a happy number.

21300103031013 is a `hidden beast` number, since 2 + 1 + 300 + 10 + 30 + 310 + 13 = 666.

It is not a de Polignac number, because 21300103031013 - 2⁵ = 21300103030981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300103031033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85482123 + ... + 85730936.

It is an arithmetic number, because the mean of its divisors is an integer number (1339913407560).

Almost surely, 2^{21300103031013} is an apocalyptic number.

21300103031013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21300103031013 is a deficient number, since it is larger than the sum of its proper divisors (10857818750427).

21300103031013 is a wasteful number, since it uses less digits than its factorization.

21300103031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171213689 (or 171213686 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21300103031013 its reverse (31013030100312), we get a palindrome (52313133131325).

The spelling of 21300103031013 in words is "twenty-one trillion, three hundred billion, one hundred three million, thirty-one thousand, thirteen".