331740747 has 18 divisors (see below), whose sum is σ = 518878932. Its totient is φ = 204147216.

The previous prime is 331740733. The next prime is 331740749. The reversal of 331740747 is 747047133.

It is not a de Polignac number, because 331740747 - 2⁶ = 331740683 is a prime.

It is a super-2 number, since 2×331740747² = 220103846440236018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331740749) 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 17 ways as a sum of consecutive naturals, for example, 107533 + ... + 110574.

Almost surely, 2^331740747 is an apocalyptic number.

331740747 is a deficient number, since it is larger than the sum of its proper divisors (187138185).

331740747 is a wasteful number, since it uses less digits than its factorization.

331740747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218139 (or 218123 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 36.

The square root of 331740747 is about 18213.7515904879. The cubic root of 331740747 is about 692.2552733844.

The spelling of 331740747 in words is "three hundred thirty-one million, seven hundred forty thousand, seven hundred forty-seven".