331220302120313 has 4 divisors (see below), whose sum is σ = 331230243634020. Its totient is φ = 331210360606608.

The previous prime is 331220302120289. The next prime is 331220302120343. The reversal of 331220302120313 is 313021203022133.

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 171793239288064 + 159427062832249 = 13106992^2 + 12626443^2 .

It is a cyclic number.

It is not a de Polignac number, because 331220302120313 - 2⁶ = 331220302120249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331220302120343) 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, 4970706878 + ... + 4970773511.

It is an arithmetic number, because the mean of its divisors is an integer number (82807560908505).

Almost surely, 2^{331220302120313} is an apocalyptic number.

It is an amenable number.

331220302120313 is a deficient number, since it is larger than the sum of its proper divisors (9941513707).

331220302120313 is an equidigital number, since it uses as much as digits as its factorization.

331220302120313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9941513706.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 331220302120313 its reverse (313021203022133), we get a palindrome (644241505142446).

The spelling of 331220302120313 in words is "three hundred thirty-one trillion, two hundred twenty billion, three hundred two million, one hundred twenty thousand, three hundred thirteen".