13781230 has 24 divisors (see below), whose sum is σ = 25264008. Its totient is φ = 5412528.

The previous prime is 13781227. The next prime is 13781233. The reversal of 13781230 is 3218731.

13781230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13781227) and next prime (13781233).

It is a junction number, because it is equal to n+sod(n) for n = 13781195 and 13781204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13781233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44737 + ... + 45043.

It is an arithmetic number, because the mean of its divisors is an integer number (1052667).

Almost surely, 2^13781230 is an apocalyptic number.

13781230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13781230 is a deficient number, since it is larger than the sum of its proper divisors (11482778).

13781230 is an equidigital number, since it uses as much as digits as its factorization.

13781230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 13781230 is about 3712.3079074883. The cubic root of 13781230 is about 239.7522327280.

Adding to 13781230 its reverse (3218731), we get a palindrome (16999961).

The spelling of 13781230 in words is "thirteen million, seven hundred eighty-one thousand, two hundred thirty".