331116388 has 6 divisors (see below), whose sum is σ = 579453686. Its totient is φ = 165558192.

The previous prime is 331116377. The next prime is 331116389. The reversal of 331116388 is 883611133.

331116388 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 325153024 + 5963364 = 18032^2 + 2442^2 .

It is not an unprimeable number, because it can be changed into a prime (331116389) 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 as a sum of consecutive naturals, namely, 41389545 + ... + 41389552.

Almost surely, 2^331116388 is an apocalyptic number.

It is an amenable number.

331116388 is a deficient number, since it is larger than the sum of its proper divisors (248337298).

331116388 is a wasteful number, since it uses less digits than its factorization.

331116388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82779101 (or 82779099 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 331116388 is about 18196.6037490516. The cubic root of 331116388 is about 691.8207098974.

The spelling of 331116388 in words is "three hundred thirty-one million, one hundred sixteen thousand, three hundred eighty-eight".