321202032013 has 4 divisors (see below), whose sum is σ = 321226347420. Its totient is φ = 321177716608.

The previous prime is 321202031999. The next prime is 321202032091. The reversal of 321202032013 is 310230202123.

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 212643643689 + 108558388324 = 461133^2 + 329482^2 .

It is a cyclic number.

It is not a de Polignac number, because 321202032013 - 2⁵ = 321202031981 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 (321202032113) 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, 12137878 + ... + 12164311.

It is an arithmetic number, because the mean of its divisors is an integer number (80306586855).

Almost surely, 2^321202032013 is an apocalyptic number.

It is an amenable number.

321202032013 is a deficient number, since it is larger than the sum of its proper divisors (24315407).

321202032013 is a wasteful number, since it uses less digits than its factorization.

321202032013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24315406.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 321202032013 its reverse (310230202123), we get a palindrome (631432234136).

The spelling of 321202032013 in words is "three hundred twenty-one billion, two hundred two million, thirty-two thousand, thirteen".