331220012113 has 4 divisors (see below), whose sum is σ = 331605600880. Its totient is φ = 330834423348.

The previous prime is 331220012111. The next prime is 331220012117. The reversal of 331220012113 is 311210022133.

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 331220012113 - 2¹ = 331220012111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331220012111) 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, 192793095 + ... + 192794812.

It is an arithmetic number, because the mean of its divisors is an integer number (82901400220).

Almost surely, 2^331220012113 is an apocalyptic number.

It is an amenable number.

331220012113 is a deficient number, since it is larger than the sum of its proper divisors (385588767).

331220012113 is an equidigital number, since it uses as much as digits as its factorization.

331220012113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385588766.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 331220012113 its reverse (311210022133), we get a palindrome (642430034246).

The spelling of 331220012113 in words is "three hundred thirty-one billion, two hundred twenty million, twelve thousand, one hundred thirteen".