331008540 has 24 divisors (see below), whose sum is σ = 926824080. Its totient is φ = 88268928.

The previous prime is 331008521. The next prime is 331008541. The reversal of 331008540 is 45800133.

It is a self number, because there is not a number n which added to its sum of digits gives 331008540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331008541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2758345 + ... + 2758464.

It is an arithmetic number, because the mean of its divisors is an integer number (38617670).

Almost surely, 2^331008540 is an apocalyptic number.

331008540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

331008540 is an abundant number, since it is smaller than the sum of its proper divisors (595815540).

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

331008540 is a wasteful number, since it uses less digits than its factorization.

331008540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5516821 (or 5516819 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 331008540 is about 18193.6400975726. The cubic root of 331008540 is about 691.7455907100.

Adding to 331008540 its reverse (45800133), we get a palindrome (376808673).

The spelling of 331008540 in words is "three hundred thirty-one million, eight thousand, five hundred forty".