331213330331213 has 4 divisors (see below), whose sum is σ = 361323633088608. Its totient is φ = 301103027573820.

The previous prime is 331213330331203. The next prime is 331213330331227. The reversal of 331213330331213 is 312133033312133.

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 331213330331213 - 2¹⁰ = 331213330330189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331213330331213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331213330331203) 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, 15055151378681 + ... + 15055151378702.

It is an arithmetic number, because the mean of its divisors is an integer number (90330908272152).

Almost surely, 2^{331213330331213} is an apocalyptic number.

It is an amenable number.

331213330331213 is a deficient number, since it is larger than the sum of its proper divisors (30110302757395).

331213330331213 is a wasteful number, since it uses less digits than its factorization.

331213330331213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30110302757394.

The product of its (nonzero) digits is 26244, while the sum is 32.

Adding to 331213330331213 its reverse (312133033312133), we get a palindrome (643346363643346).

The spelling of 331213330331213 in words is "three hundred thirty-one trillion, two hundred thirteen billion, three hundred thirty million, three hundred thirty-one thousand, two hundred thirteen".