21310343113 has 8 divisors (see below), whose sum is σ = 22145414400. Its totient is φ = 20484499440.

The previous prime is 21310343099. The next prime is 21310343137. The reversal of 21310343113 is 31134301312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21310343113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21310343713) 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, 2302195 + ... + 2311432.

It is an arithmetic number, because the mean of its divisors is an integer number (2768176800).

Almost surely, 2^21310343113 is an apocalyptic number.

It is an amenable number.

21310343113 is a deficient number, since it is larger than the sum of its proper divisors (835071287).

21310343113 is a wasteful number, since it uses less digits than its factorization.

21310343113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613807.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21310343113 its reverse (31134301312), we get a palindrome (52444644425).

The spelling of 21310343113 in words is "twenty-one billion, three hundred ten million, three hundred forty-three thousand, one hundred thirteen".