331200013130321 has 4 divisors (see below), whose sum is σ = 331200229288500. Its totient is φ = 331199796972144.

The previous prime is 331200013130297. The next prime is 331200013130369. The reversal of 331200013130321 is 123031310002133.

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 209297127081025 + 121902886049296 = 14467105^2 + 11040964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331200013130321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331200013133321) 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, 105764246 + ... + 108850703.

It is an arithmetic number, because the mean of its divisors is an integer number (82800057322125).

Almost surely, 2^{331200013130321} is an apocalyptic number.

It is an amenable number.

331200013130321 is a deficient number, since it is larger than the sum of its proper divisors (216158179).

331200013130321 is a wasteful number, since it uses less digits than its factorization.

331200013130321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216158178.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 331200013130321 its reverse (123031310002133), we get a palindrome (454231323132454).

The spelling of 331200013130321 in words is "three hundred thirty-one trillion, two hundred billion, thirteen million, one hundred thirty thousand, three hundred twenty-one".