13031330 has 32 divisors (see below), whose sum is σ = 25704000. Its totient is φ = 4727232.

The previous prime is 13031329. The next prime is 13031339. The reversal of 13031330 is 3313031.

It is not an unprimeable number, because it can be changed into a prime (13031339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6821 + ... + 8519.

It is an arithmetic number, because the mean of its divisors is an integer number (803250).

Almost surely, 2^13031330 is an apocalyptic number.

13031330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13031330 is a deficient number, since it is larger than the sum of its proper divisors (12672670).

13031330 is a wasteful number, since it uses less digits than its factorization.

13031330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778.

The product of its (nonzero) digits is 81, while the sum is 14.

The square root of 13031330 is about 3609.8933502252. The cubic root of 13031330 is about 235.3222077861.

Adding to 13031330 its reverse (3313031), we get a palindrome (16344361).

The spelling of 13031330 in words is "thirteen million, thirty-one thousand, three hundred thirty".