16012231 has 8 divisors (see below), whose sum is σ = 17311280. Its totient is φ = 14758848.

The previous prime is 16012219. The next prime is 16012247. The reversal of 16012231 is 13221061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16012231 is a prime.

It is a super-2 number, since 2×16012231² = 512783083194722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16012291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10686 + ... + 12091.

It is an arithmetic number, because the mean of its divisors is an integer number (2163910).

Almost surely, 2^16012231 is an apocalyptic number.

16012231 is a deficient number, since it is larger than the sum of its proper divisors (1299049).

16012231 is a wasteful number, since it uses less digits than its factorization.

16012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22833.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 16012231 is about 4001.5285829293. The cubic root of 16012231 is about 252.0484023512.

Adding to 16012231 its reverse (13221061), we get a palindrome (29233292).

The spelling of 16012231 in words is "sixteen million, twelve thousand, two hundred thirty-one".