331340538 has 32 divisors (see below), whose sum is σ = 669412800. Its totient is φ = 109330560.

The previous prime is 331340533. The next prime is 331340539. The reversal of 331340538 is 835043133.

331340538 is nontrivially palindromic in base 11.

It is not an unprimeable number, because it can be changed into a prime (331340531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408153 + ... + 408963.

It is an arithmetic number, because the mean of its divisors is an integer number (20919150).

Almost surely, 2^331340538 is an apocalyptic number.

331340538 is an abundant number, since it is smaller than the sum of its proper divisors (338072262).

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

331340538 is a wasteful number, since it uses less digits than its factorization.

331340538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 331340538 is about 18202.7618234157. The cubic root of 331340538 is about 691.9767845576.

The spelling of 331340538 in words is "three hundred thirty-one million, three hundred forty thousand, five hundred thirty-eight".