13213230 has 16 divisors (see below), whose sum is σ = 31711824. Its totient is φ = 3523520.

The previous prime is 13213229. The next prime is 13213231. The reversal of 13213230 is 3231231.

13213230 = 1816² + 1817² + ... + 1819².

It is an interprime number because it is at equal distance from previous prime (13213229) and next prime (13213231).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220191 + ... + 220250.

It is an arithmetic number, because the mean of its divisors is an integer number (1981989).

Almost surely, 2^13213230 is an apocalyptic number.

13213230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13213230 is an abundant number, since it is smaller than the sum of its proper divisors (18498594).

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

13213230 is a wasteful number, since it uses less digits than its factorization.

13213230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440451.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 13213230 is about 3635.0006877578. Note that the first 3 decimals coincide. The cubic root of 13213230 is about 236.4120804864.

Adding to 13213230 its reverse (3231231), we get a palindrome (16444461).

The spelling of 13213230 in words is "thirteen million, two hundred thirteen thousand, two hundred thirty".