331320113 has 4 divisors (see below), whose sum is σ = 331377648. Its totient is φ = 331262580.

The previous prime is 331320109. The next prime is 331320127. The reversal of 331320113 is 311023133.

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: 311023133 = 53 ⋅5868361.

It is a cyclic number.

It is not a de Polignac number, because 331320113 - 2² = 331320109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331320091 and 331320100.

It is not an unprimeable number, because it can be changed into a prime (331320103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19031 + ... + 32012.

It is an arithmetic number, because the mean of its divisors is an integer number (82844412).

Almost surely, 2^331320113 is an apocalyptic number.

It is an amenable number.

331320113 is a deficient number, since it is larger than the sum of its proper divisors (57535).

331320113 is an equidigital number, since it uses as much as digits as its factorization.

331320113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57534.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 331320113 is about 18202.2007735329. The cubic root of 331320113 is about 691.9625656351.

Adding to 331320113 its reverse (311023133), we get a palindrome (642343246).

The spelling of 331320113 in words is "three hundred thirty-one million, three hundred twenty thousand, one hundred thirteen".