21131200131303 has 8 divisors (see below), whose sum is σ = 28216798196848. Its totient is φ = 14066534409984.

The previous prime is 21131200131299. The next prime is 21131200131323. The reversal of 21131200131303 is 30313100213112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21131200131303 - 2² = 21131200131299 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21131200131303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21131200131323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5233083700 + ... + 5233087737.

It is an arithmetic number, because the mean of its divisors is an integer number (3527099774606).

Almost surely, 2^{21131200131303} is an apocalyptic number.

21131200131303 is a deficient number, since it is larger than the sum of its proper divisors (7085598065545).

21131200131303 is a wasteful number, since it uses less digits than its factorization.

21131200131303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10466172113.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21131200131303 its reverse (30313100213112), we get a palindrome (51444300344415).

The spelling of 21131200131303 in words is "twenty-one trillion, one hundred thirty-one billion, two hundred million, one hundred thirty-one thousand, three hundred three".