206343139 has 8 divisors (see below), whose sum is σ = 207511920. Its totient is φ = 205178400.

The previous prime is 206343107. The next prime is 206343233. The reversal of 206343139 is 931343602.

206343139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 206343139 - 2⁵ = 206343107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206343139.

It is not an unprimeable number, because it can be changed into a prime (206343539) 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, 174129 + ... + 175309.

It is an arithmetic number, because the mean of its divisors is an integer number (25938990).

Almost surely, 2^206343139 is an apocalyptic number.

206343139 is a deficient number, since it is larger than the sum of its proper divisors (1168781).

206343139 is a wasteful number, since it uses less digits than its factorization.

206343139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 206343139 is about 14364.6489341021. The cubic root of 206343139 is about 590.9217985497.

The spelling of 206343139 in words is "two hundred six million, three hundred forty-three thousand, one hundred thirty-nine".