331220120113 has 4 divisors (see below), whose sum is σ = 338922913648. Its totient is φ = 323517326580.

The previous prime is 331220120071. The next prime is 331220120117. The reversal of 331220120113 is 311021022133.

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, and also an emirpimes, since its reverse is a distinct semiprime: 311021022133 = 2579 ⋅120597527.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331220120113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331220120117) 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, 3851396703 + ... + 3851396788.

It is an arithmetic number, because the mean of its divisors is an integer number (84730728412).

Almost surely, 2^331220120113 is an apocalyptic number.

It is an amenable number.

331220120113 is a deficient number, since it is larger than the sum of its proper divisors (7702793535).

331220120113 is an equidigital number, since it uses as much as digits as its factorization.

331220120113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7702793534.

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

Adding to 331220120113 its reverse (311021022133), we get a palindrome (642241142246).

The spelling of 331220120113 in words is "three hundred thirty-one billion, two hundred twenty million, one hundred twenty thousand, one hundred thirteen".