331340740 has 12 divisors (see below), whose sum is σ = 695815596. Its totient is φ = 132536288.

The previous prime is 331340729. The next prime is 331340743. The reversal of 331340740 is 47043133.

It is a happy number.

331340740 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 2 ways, for example, as 130325056 + 201015684 = 11416^2 + 14178^2 .

It is not an unprimeable number, because it can be changed into a prime (331340743) 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 3 ways as a sum of consecutive naturals, for example, 8283499 + ... + 8283538.

It is an arithmetic number, because the mean of its divisors is an integer number (57984633).

Almost surely, 2^331340740 is an apocalyptic number.

It is an amenable number.

331340740 is an abundant number, since it is smaller than the sum of its proper divisors (364474856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331340740 is a wasteful number, since it uses less digits than its factorization.

331340740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16567046 (or 16567044 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 331340740 is about 18202.7673720234. The cubic root of 331340740 is about 691.9769251775.

Adding to 331340740 its reverse (47043133), we get a palindrome (378383873).

The spelling of 331340740 in words is "three hundred thirty-one million, three hundred forty thousand, seven hundred forty".