2101323013 has 4 divisors (see below), whose sum is σ = 2101495660. Its totient is φ = 2101150368.

The previous prime is 2101323001. The next prime is 2101323023. The reversal of 2101323013 is 3103231012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1152806209 + 948516804 = 33953^2 + 30798^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101323013 - 2¹⁷ = 2101191941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101323023) 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, 66558 + ... + 92911.

It is an arithmetic number, because the mean of its divisors is an integer number (525373915).

Almost surely, 2^2101323013 is an apocalyptic number.

It is an amenable number.

2101323013 is a deficient number, since it is larger than the sum of its proper divisors (172647).

2101323013 is a wasteful number, since it uses less digits than its factorization.

2101323013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172646.

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

The square root of 2101323013 is about 45840.1899319800. The cubic root of 2101323013 is about 1280.8480327997.

Adding to 2101323013 its reverse (3103231012), we get a palindrome (5204554025).

The spelling of 2101323013 in words is "two billion, one hundred one million, three hundred twenty-three thousand, thirteen".