21310023003100 has 72 divisors (see below), whose sum is σ = 49807847406240. Its totient is φ = 7867058062080.

The previous prime is 21310023003077. The next prime is 21310023003127. The reversal of 21310023003100 is 130032001312.

It is a super-2 number, since 2×21310023003100² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6842289 + ... + 9457111.

It is an arithmetic number, because the mean of its divisors is an integer number (691775658420).

Almost surely, 2^{21310023003100} is an apocalyptic number.

21310023003100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21310023003100 is an abundant number, since it is smaller than the sum of its proper divisors (28497824403140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21310023003100 is a wasteful number, since it uses less digits than its factorization.

21310023003100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621119 (or 2621112 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21310023003100 its reverse (130032001312), we get a palindrome (21440055004412).

The spelling of 21310023003100 in words is "twenty-one trillion, three hundred ten billion, twenty-three million, three thousand, one hundred".