208673231 has 16 divisors (see below), whose sum is σ = 231036960. Its totient is φ = 187246080.

The previous prime is 208673177. The next prime is 208673233. The reversal of 208673231 is 132376802.

It is a happy number.

208673231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 208673231 - 2⁶ = 208673167 is a prime.

It is a super-2 number, since 2×208673231² = 87089034671958722, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208673233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201491 + ... + 202523.

It is an arithmetic number, because the mean of its divisors is an integer number (14439810).

Almost surely, 2^208673231 is an apocalyptic number.

208673231 is a deficient number, since it is larger than the sum of its proper divisors (22363729).

208673231 is a wasteful number, since it uses less digits than its factorization.

208673231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 208673231 is about 14445.5263317056. The cubic root of 208673231 is about 593.1377701732.

The spelling of 208673231 in words is "two hundred eight million, six hundred seventy-three thousand, two hundred thirty-one".