201123320313 has 4 divisors (see below), whose sum is σ = 268164427088. Its totient is φ = 134082213540.

The previous prime is 201123320311. The next prime is 201123320357. The reversal of 201123320313 is 313023321102.

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.

It is not a de Polignac number, because 201123320313 - 2¹ = 201123320311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201123320313.

It is not an unprimeable number, because it can be changed into a prime (201123320311) 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, 33520553383 + ... + 33520553388.

It is an arithmetic number, because the mean of its divisors is an integer number (67041106772).

Almost surely, 2^201123320313 is an apocalyptic number.

It is an amenable number.

201123320313 is a deficient number, since it is larger than the sum of its proper divisors (67041106775).

201123320313 is an equidigital number, since it uses as much as digits as its factorization.

201123320313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67041106774.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 201123320313 its reverse (313023321102), we get a palindrome (514146641415).

The spelling of 201123320313 in words is "two hundred one billion, one hundred twenty-three million, three hundred twenty thousand, three hundred thirteen".