21310131203 has 8 divisors (see below), whose sum is σ = 21627946080. Its totient is φ = 20992807360.

The previous prime is 21310131181. The next prime is 21310131289. The reversal of 21310131203 is 30213101312.

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

It is a cyclic number.

It is not a de Polignac number, because 21310131203 - 2²⁸ = 21041695747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21310131503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34850 + ... + 209367.

It is an arithmetic number, because the mean of its divisors is an integer number (2703493260).

Almost surely, 2^21310131203 is an apocalyptic number.

21310131203 is a deficient number, since it is larger than the sum of its proper divisors (317814877).

21310131203 is a wasteful number, since it uses less digits than its factorization.

21310131203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245517.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21310131203 its reverse (30213101312), we get a palindrome (51523232515).

The spelling of 21310131203 in words is "twenty-one billion, three hundred ten million, one hundred thirty-one thousand, two hundred three".