16299331 has 4 divisors (see below), whose sum is σ = 16342272. Its totient is φ = 16256392.

The previous prime is 16299329. The next prime is 16299337. The reversal of 16299331 is 13399261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13399261 = 109 ⋅122929.

It is a cyclic number.

It is not a de Polignac number, because 16299331 - 2¹ = 16299329 is a prime.

It is a super-2 number, since 2×16299331² = 531336382095122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16299337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20896 + ... + 21661.

It is an arithmetic number, because the mean of its divisors is an integer number (4085568).

Almost surely, 2^16299331 is an apocalyptic number.

16299331 is a deficient number, since it is larger than the sum of its proper divisors (42941).

16299331 is an equidigital number, since it uses as much as digits as its factorization.

16299331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42940.

The product of its digits is 8748, while the sum is 34.

The square root of 16299331 is about 4037.2429949162. The cubic root of 16299331 is about 253.5459005748.

The spelling of 16299331 in words is "sixteen million, two hundred ninety-nine thousand, three hundred thirty-one".