16319231 has 8 divisors (see below), whose sum is σ = 16794624. Its totient is φ = 15848280.

The previous prime is 16319209. The next prime is 16319239. The reversal of 16319231 is 13291361.

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

It is a cyclic number.

It is not a de Polignac number, because 16319231 - 2¹⁸ = 16057087 is a prime.

It is a super-2 number, since 2×16319231² = 532634600862722, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 16319231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16319239) 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, 7220 + ... + 9206.

It is an arithmetic number, because the mean of its divisors is an integer number (2099328).

Almost surely, 2^16319231 is an apocalyptic number.

16319231 is a deficient number, since it is larger than the sum of its proper divisors (475393).

16319231 is a wasteful number, since it uses less digits than its factorization.

16319231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221.

The product of its digits is 972, while the sum is 26.

The square root of 16319231 is about 4039.7067962910. The cubic root of 16319231 is about 253.6490441010.

The spelling of 16319231 in words is "sixteen million, three hundred nineteen thousand, two hundred thirty-one".