331220311213103 has 4 divisors (see below), whose sum is σ = 356698796691048. Its totient is φ = 305741825735160.

The previous prime is 331220311213093. The next prime is 331220311213133. The reversal of 331220311213103 is 301312113022133.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331220311213103 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 (331220311213133) 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, 12739242738953 + ... + 12739242738978.

It is an arithmetic number, because the mean of its divisors is an integer number (89174699172762).

Almost surely, 2^{331220311213103} is an apocalyptic number.

331220311213103 is a deficient number, since it is larger than the sum of its proper divisors (25478485477945).

331220311213103 is a wasteful number, since it uses less digits than its factorization.

331220311213103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25478485477944.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 331220311213103 its reverse (301312113022133), we get a palindrome (632532424235236).

The spelling of 331220311213103 in words is "three hundred thirty-one trillion, two hundred twenty billion, three hundred eleven million, two hundred thirteen thousand, one hundred three".