331022113 has 4 divisors (see below), whose sum is σ = 350494020. Its totient is φ = 311550208.

The previous prime is 331022059. The next prime is 331022149. The reversal of 331022113 is 311220133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 260596449 + 70425664 = 16143^2 + 8392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331022113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331022183) 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, 9735928 + ... + 9735961.

It is an arithmetic number, because the mean of its divisors is an integer number (87623505).

Almost surely, 2^331022113 is an apocalyptic number.

It is an amenable number.

331022113 is a deficient number, since it is larger than the sum of its proper divisors (19471907).

331022113 is a wasteful number, since it uses less digits than its factorization.

331022113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19471906.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 331022113 is about 18194.0131087124. The cubic root of 331022113 is about 691.7550455865.

Adding to 331022113 its reverse (311220133), we get a palindrome (642242246).

The spelling of 331022113 in words is "three hundred thirty-one million, twenty-two thousand, one hundred thirteen".