13181330 has 32 divisors (see below), whose sum is σ = 24385536. Its totient is φ = 5128704.

The previous prime is 13181317. The next prime is 13181347. The reversal of 13181330 is 3318131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103727 + ... + 103853.

It is an arithmetic number, because the mean of its divisors is an integer number (762048).

Almost surely, 2^13181330 is an apocalyptic number.

13181330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13181330 is a deficient number, since it is larger than the sum of its proper divisors (11204206).

13181330 is a wasteful number, since it uses less digits than its factorization.

13181330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 13181330 is about 3630.6101415602. The cubic root of 13181330 is about 236.2216747953.

Adding to 13181330 its reverse (3318131), we get a palindrome (16499461).

The spelling of 13181330 in words is "thirteen million, one hundred eighty-one thousand, three hundred thirty".