16481213 has 4 divisors (see below), whose sum is σ = 18835680. Its totient is φ = 14126748.

The previous prime is 16481209. The next prime is 16481233. The reversal of 16481213 is 31218461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16481213 - 2² = 16481209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16481203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1177223 + ... + 1177236.

It is an arithmetic number, because the mean of its divisors is an integer number (4708920).

Almost surely, 2^16481213 is an apocalyptic number.

It is an amenable number.

16481213 is a deficient number, since it is larger than the sum of its proper divisors (2354467).

16481213 is an equidigital number, since it uses as much as digits as its factorization.

16481213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354466.

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

The square root of 16481213 is about 4059.7060238397. The cubic root of 16481213 is about 254.4855088546.

Adding to 16481213 its reverse (31218461), we get a palindrome (47699674).

The spelling of 16481213 in words is "sixteen million, four hundred eighty-one thousand, two hundred thirteen".