208430231 has 4 divisors (see below), whose sum is σ = 209418264. Its totient is φ = 207442200.

The previous prime is 208430207. The next prime is 208430237. The reversal of 208430231 is 132034802.

208430231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 208430231 - 2¹⁴ = 208413847 is a prime.

It is a super-2 number, since 2×208430231² = 86886322389426722, 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 = 208430197 and 208430206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208430237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493700 + ... + 494121.

It is an arithmetic number, because the mean of its divisors is an integer number (52354566).

Almost surely, 2^208430231 is an apocalyptic number.

208430231 is a deficient number, since it is larger than the sum of its proper divisors (988033).

208430231 is an equidigital number, since it uses as much as digits as its factorization.

208430231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988032.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 208430231 is about 14437.1129731675. The cubic root of 208430231 is about 592.9074444128.

The spelling of 208430231 in words is "two hundred eight million, four hundred thirty thousand, two hundred thirty-one".