20201013013 has 6 divisors (see below), whose sum is σ = 20285947094. Its totient is φ = 20116433064.

The previous prime is 20201012983. The next prime is 20201013023. The reversal of 20201013013 is 31031010202.

It can be written as a sum of positive squares in only one way, i.e., 10220603409 + 9980409604 = 101097^2 + 99902^2 .

It is not a de Polignac number, because 20201013013 - 2¹³ = 20201004821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20201012984 and 20201013002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201013023) 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, 119706 + ... + 233947.

Almost surely, 2^20201013013 is an apocalyptic number.

It is an amenable number.

20201013013 is a deficient number, since it is larger than the sum of its proper divisors (84934081).

20201013013 is an frugal number, since it uses more digits than its factorization.

20201013013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354131 (or 353892 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20201013013 its reverse (31031010202), we get a palindrome (51232023215).

The spelling of 20201013013 in words is "twenty billion, two hundred one million, thirteen thousand, thirteen".