13281402 has 16 divisors (see below), whose sum is σ = 26937792. Its totient is φ = 4364640.

The previous prime is 13281377. The next prime is 13281427. The reversal of 13281402 is 20418231.

13281402 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 (13281377) and next prime (13281427).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15163 + ... + 16014.

It is an arithmetic number, because the mean of its divisors is an integer number (1683612).

Almost surely, 2^13281402 is an apocalyptic number.

13281402 is an abundant number, since it is smaller than the sum of its proper divisors (13656390).

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

13281402 is a wasteful number, since it uses less digits than its factorization.

13281402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31253.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 13281402 is about 3644.3657884466. The cubic root of 13281402 is about 236.8179627269.

Adding to 13281402 its reverse (20418231), we get a palindrome (33699633).

The spelling of 13281402 in words is "thirteen million, two hundred eighty-one thousand, four hundred two".