16043231 has 4 divisors (see below), whose sum is σ = 16269264. Its totient is φ = 15817200.

The previous prime is 16043207. The next prime is 16043249. The reversal of 16043231 is 13234061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16043231 - 2¹⁴ = 16026847 is a prime.

It is a super-2 number, since 2×16043231² = 514770521838722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16043281) 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, 112910 + ... + 113051.

It is an arithmetic number, because the mean of its divisors is an integer number (4067316).

Almost surely, 2^16043231 is an apocalyptic number.

16043231 is a deficient number, since it is larger than the sum of its proper divisors (226033).

16043231 is an equidigital number, since it uses as much as digits as its factorization.

16043231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226032.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 16043231 is about 4005.4002296899. The cubic root of 16043231 is about 252.2109544138.

Adding to 16043231 its reverse (13234061), we get a palindrome (29277292).

The spelling of 16043231 in words is "sixteen million, forty-three thousand, two hundred thirty-one".