16808231 has 12 divisors (see below), whose sum is σ = 19075392. Its totient is φ = 14784000.

The previous prime is 16808221. The next prime is 16808269. The reversal of 16808231 is 13280861.

16808231 = 29² + 30² + ... + 369².

It is not a de Polignac number, because 16808231 - 2¹⁰ = 16807207 is a prime.

It is a super-2 number, since 2×16808231² = 565033258698722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16808194 and 16808203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16808221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1511 + ... + 5991.

It is an arithmetic number, because the mean of its divisors is an integer number (1589616).

Almost surely, 2^16808231 is an apocalyptic number.

16808231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16808231 is a deficient number, since it is larger than the sum of its proper divisors (2267161).

16808231 is a wasteful number, since it uses less digits than its factorization.

16808231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4534 (or 4523 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 16808231 is about 4099.7842626168. The cubic root of 16808231 is about 256.1576533395.

The spelling of 16808231 in words is "sixteen million, eight hundred eight thousand, two hundred thirty-one".