20020020313 has 4 divisors (see below), whose sum is σ = 20445978240. Its totient is φ = 19594062388.

The previous prime is 20020020311. The next prime is 20020020359. The reversal of 20020020313 is 31302002002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31302002002 = 2 ⋅15651001001.

It is a cyclic number.

It is not a de Polignac number, because 20020020313 - 2¹ = 20020020311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020020293 and 20020020302.

It is not an unprimeable number, because it can be changed into a prime (20020020311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212978893 + ... + 212978986.

It is an arithmetic number, because the mean of its divisors is an integer number (5111494560).

Almost surely, 2^20020020313 is an apocalyptic number.

It is an amenable number.

20020020313 is a deficient number, since it is larger than the sum of its proper divisors (425957927).

20020020313 is an equidigital number, since it uses as much as digits as its factorization.

20020020313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425957926.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20020020313 its reverse (31302002002), we get a palindrome (51322022315).

The spelling of 20020020313 in words is "twenty billion, twenty million, twenty thousand, three hundred thirteen".