320131204013 has 4 divisors (see below), whose sum is σ = 320134350528. Its totient is φ = 320128057500.

The previous prime is 320131203983. The next prime is 320131204021. The reversal of 320131204013 is 310402131023.

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 a cyclic number.

It is not a de Polignac number, because 320131204013 - 2¹² = 320131199917 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 (320131204093) 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, 1415363 + ... + 1625888.

It is an arithmetic number, because the mean of its divisors is an integer number (80033587632).

Almost surely, 2^320131204013 is an apocalyptic number.

It is an amenable number.

320131204013 is a deficient number, since it is larger than the sum of its proper divisors (3146515).

320131204013 is a wasteful number, since it uses less digits than its factorization.

320131204013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3146514.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 320131204013 its reverse (310402131023), we get a palindrome (630533335036).

The spelling of 320131204013 in words is "three hundred twenty billion, one hundred thirty-one million, two hundred four thousand, thirteen".