331320111 has 8 divisors (see below), whose sum is σ = 443034624. Its totient is φ = 220242840.

The previous prime is 331320109. The next prime is 331320127. The reversal of 331320111 is 111023133.

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

It is not a de Polignac number, because 331320111 - 2¹ = 331320109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331320131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158095 + ... + 160176.

It is an arithmetic number, because the mean of its divisors is an integer number (55379328).

Almost surely, 2^331320111 is an apocalyptic number.

331320111 is a deficient number, since it is larger than the sum of its proper divisors (111714513).

331320111 is a wasteful number, since it uses less digits than its factorization.

331320111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318621.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 331320111 is about 18202.2007185944. The cubic root of 331320111 is about 691.9625642428.

Adding to 331320111 its reverse (111023133), we get a palindrome (442343244).

The spelling of 331320111 in words is "three hundred thirty-one million, three hundred twenty thousand, one hundred eleven".