21313031101 has 8 divisors (see below), whose sum is σ = 22596173600. Its totient is φ = 20046029040.

The previous prime is 21313031099. The next prime is 21313031119. The reversal of 21313031101 is 10113031312.

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

It is not a de Polignac number, because 21313031101 - 2¹ = 21313031099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313031191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4032390 + ... + 4037671.

It is an arithmetic number, because the mean of its divisors is an integer number (2824521700).

Almost surely, 2^21313031101 is an apocalyptic number.

It is an amenable number.

21313031101 is a deficient number, since it is larger than the sum of its proper divisors (1283142499).

21313031101 is a wasteful number, since it uses less digits than its factorization.

21313031101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8070219.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 21313031101 its reverse (10113031312), we get a palindrome (31426062413).

The spelling of 21313031101 in words is "twenty-one billion, three hundred thirteen million, thirty-one thousand, one hundred one".