201320434013 has 4 divisors (see below), whose sum is σ = 201321356448. Its totient is φ = 201319511580.

The previous prime is 201320433961. The next prime is 201320434067. The reversal of 201320434013 is 310434023102.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 201320434013 - 2²⁰ = 201319385437 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 201320434013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201320434813) 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, 70448 + ... + 638438.

It is an arithmetic number, because the mean of its divisors is an integer number (50330339112).

Almost surely, 2^201320434013 is an apocalyptic number.

It is an amenable number.

201320434013 is a deficient number, since it is larger than the sum of its proper divisors (922435).

201320434013 is an equidigital number, since it uses as much as digits as its factorization.

201320434013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922434.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 201320434013 its reverse (310434023102), we get a palindrome (511754457115).

The spelling of 201320434013 in words is "two hundred one billion, three hundred twenty million, four hundred thirty-four thousand, thirteen".