16143213 has 4 divisors (see below), whose sum is σ = 21524288. Its totient is φ = 10762140.

The previous prime is 16143191. The next prime is 16143247. The reversal of 16143213 is 31234161.

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 not a de Polignac number, because 16143213 - 2²⁰ = 15094637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16143213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16143313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2690533 + ... + 2690538.

It is an arithmetic number, because the mean of its divisors is an integer number (5381072).

Almost surely, 2^16143213 is an apocalyptic number.

It is an amenable number.

16143213 is a deficient number, since it is larger than the sum of its proper divisors (5381075).

16143213 is an equidigital number, since it uses as much as digits as its factorization.

16143213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5381074.

The product of its digits is 432, while the sum is 21.

The square root of 16143213 is about 4017.8617447593. The cubic root of 16143213 is about 252.7337990694.

Adding to 16143213 its reverse (31234161), we get a palindrome (47377374).

The spelling of 16143213 in words is "sixteen million, one hundred forty-three thousand, two hundred thirteen".