20030001313 has 6 divisors (see below), whose sum is σ = 23300205666. Its totient is φ = 17168572512.

The previous prime is 20030001289. The next prime is 20030001349. The reversal of 20030001313 is 31310003002.

It can be written as a sum of positive squares in only one way, i.e., 17335145569 + 2694855744 = 131663^2 + 51912^2 .

It is not a de Polignac number, because 20030001313 - 2²⁵ = 19996446881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20030001293 and 20030001302.

It is not an unprimeable number, because it can be changed into a prime (20030001373) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204387720 + ... + 204387817.

It is an arithmetic number, because the mean of its divisors is an integer number (3883367611).

Almost surely, 2^20030001313 is an apocalyptic number.

It is an amenable number.

20030001313 is a deficient number, since it is larger than the sum of its proper divisors (3270204353).

20030001313 is an equidigital number, since it uses as much as digits as its factorization.

20030001313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408775551 (or 408775544 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 20030001313 its reverse (31310003002), we get a palindrome (51340004315).

The spelling of 20030001313 in words is "twenty billion, thirty million, one thousand, three hundred thirteen".