331131220113 has 8 divisors (see below), whose sum is σ = 441566716576. Its totient is φ = 220724935200.

The previous prime is 331131220081. The next prime is 331131220181. The reversal of 331131220113 is 311022131133.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 331131220113 - 2⁵ = 331131220081 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 331131220113.

It is not an unprimeable number, because it can be changed into a prime (331131220813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7276423 + ... + 7321788.

It is an arithmetic number, because the mean of its divisors is an integer number (55195839572).

Almost surely, 2^331131220113 is an apocalyptic number.

It is an amenable number.

331131220113 is a deficient number, since it is larger than the sum of its proper divisors (110435496463).

331131220113 is a wasteful number, since it uses less digits than its factorization.

331131220113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14605775.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 331131220113 its reverse (311022131133), we get a palindrome (642153351246).

The spelling of 331131220113 in words is "three hundred thirty-one billion, one hundred thirty-one million, two hundred twenty thousand, one hundred thirteen".