16271213 has 4 divisors (see below), whose sum is σ = 18595680. Its totient is φ = 13946748.

The previous prime is 16271207. The next prime is 16271267. The reversal of 16271213 is 31217261.

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 16271213 - 2¹² = 16267117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16271273) 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, 1162223 + ... + 1162236.

It is an arithmetic number, because the mean of its divisors is an integer number (4648920).

Almost surely, 2^16271213 is an apocalyptic number.

It is an amenable number.

16271213 is a deficient number, since it is larger than the sum of its proper divisors (2324467).

16271213 is an equidigital number, since it uses as much as digits as its factorization.

16271213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324466.

The product of its digits is 504, while the sum is 23.

The square root of 16271213 is about 4033.7591648486. The cubic root of 16271213 is about 253.4000191866.

Adding to 16271213 its reverse (31217261), we get a palindrome (47488474).

The spelling of 16271213 in words is "sixteen million, two hundred seventy-one thousand, two hundred thirteen".