20313301021 has 8 divisors (see below), whose sum is σ = 21897471960. Its totient is φ = 18732217152.

The previous prime is 20313301013. The next prime is 20313301027. The reversal of 20313301021 is 12010331302.

It can be written as a sum of positive squares in 4 ways, for example, as 1830898521 + 18482402500 = 42789^2 + 135950^2 .

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 20313301021 - 2³ = 20313301013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20313300986 and 20313301004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313301027) 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, 758086 + ... + 784423.

It is an arithmetic number, because the mean of its divisors is an integer number (2737183995).

Almost surely, 2^20313301021 is an apocalyptic number.

It is an amenable number.

20313301021 is a deficient number, since it is larger than the sum of its proper divisors (1584170939).

20313301021 is a wasteful number, since it uses less digits than its factorization.

20313301021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543535.

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

Adding to 20313301021 its reverse (12010331302), we get a palindrome (32323632323).

The spelling of 20313301021 in words is "twenty billion, three hundred thirteen million, three hundred one thousand, twenty-one".