21023001313 has 8 divisors (see below), whose sum is σ = 21359372832. Its totient is φ = 20687294496.

The previous prime is 21023001299. The next prime is 21023001341. The reversal of 21023001313 is 31310032012.

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 21023001313 - 2²¹ = 21020904161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21023001343) 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, 102220 + ... + 229117.

It is an arithmetic number, because the mean of its divisors is an integer number (2669921604).

Almost surely, 2^21023001313 is an apocalyptic number.

It is an amenable number.

21023001313 is a deficient number, since it is larger than the sum of its proper divisors (336371519).

21023001313 is an equidigital number, since it uses as much as digits as its factorization.

21023001313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332351.

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

Adding to 21023001313 its reverse (31310032012), we get a palindrome (52333033325).

The spelling of 21023001313 in words is "twenty-one billion, twenty-three million, one thousand, three hundred thirteen".