13281830 has 8 divisors (see below), whose sum is σ = 23907312. Its totient is φ = 5312728.

The previous prime is 13281823. The next prime is 13281889. The reversal of 13281830 is 3818231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13281830.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664082 + ... + 664101.

It is an arithmetic number, because the mean of its divisors is an integer number (2988414).

Almost surely, 2^13281830 is an apocalyptic number.

13281830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13281830 is a deficient number, since it is larger than the sum of its proper divisors (10625482).

13281830 is a wasteful number, since it uses less digits than its factorization.

13281830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328190.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 13281830 is about 3644.4245087531. The cubic root of 13281830 is about 236.8205065597.

The spelling of 13281830 in words is "thirteen million, two hundred eighty-one thousand, eight hundred thirty".