13234821 has 16 divisors (see below), whose sum is σ = 18731520. Its totient is φ = 8294000.

The previous prime is 13234813. The next prime is 13234829. The reversal of 13234821 is 12843231.

13234821 is digitally balanced in base 2 and base 4, because in such bases 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 (13234813) and next prime (13234829).

It is a cyclic number.

It is not a de Polignac number, because 13234821 - 2³ = 13234813 is a prime.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 13234791 and 13234800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13234829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2446 + ... + 5696.

It is an arithmetic number, because the mean of its divisors is an integer number (1170720).

Almost surely, 2^13234821 is an apocalyptic number.

It is an amenable number.

13234821 is a deficient number, since it is larger than the sum of its proper divisors (5496699).

13234821 is a wasteful number, since it uses less digits than its factorization.

13234821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336.

The product of its digits is 1152, while the sum is 24.

The square root of 13234821 is about 3637.9693511628. The cubic root of 13234821 is about 236.5407796638.

The spelling of 13234821 in words is "thirteen million, two hundred thirty-four thousand, eight hundred twenty-one".