331020201101213 has 32 divisors (see below), whose sum is σ = 372206611213920. Its totient is φ = 292371047055360.

The previous prime is 331020201101167. The next prime is 331020201101221. The reversal of 331020201101213 is 312101102020133.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 209756651748484 + 121263549352729 = 14482978^2 + 11011973^2 .

It is a de Polignac number, because none of the positive numbers 2^k-331020201101213 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 (331020201401213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73782695 + ... + 78140427.

It is an arithmetic number, because the mean of its divisors is an integer number (11631456600435).

Almost surely, 2^{331020201101213} is an apocalyptic number.

It is an amenable number.

331020201101213 is a deficient number, since it is larger than the sum of its proper divisors (41186410112707).

331020201101213 is a wasteful number, since it uses less digits than its factorization.

331020201101213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360529.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 331020201101213 its reverse (312101102020133), we get a palindrome (643121303121346).

The spelling of 331020201101213 in words is "three hundred thirty-one trillion, twenty billion, two hundred one million, one hundred one thousand, two hundred thirteen".