206151243 has 4 divisors (see below), whose sum is σ = 274868328. Its totient is φ = 137434160.

The previous prime is 206151233. The next prime is 206151301. The reversal of 206151243 is 342151602.

206151243 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 206151243 - 2¹³ = 206143051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206151233) 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, 34358538 + ... + 34358543.

It is an arithmetic number, because the mean of its divisors is an integer number (68717082).

Almost surely, 2^206151243 is an apocalyptic number.

206151243 is a deficient number, since it is larger than the sum of its proper divisors (68717085).

206151243 is an equidigital number, since it uses as much as digits as its factorization.

206151243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68717084.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 206151243 is about 14357.9679272521. The cubic root of 206151243 is about 590.7385589547.

The spelling of 206151243 in words is "two hundred six million, one hundred fifty-one thousand, two hundred forty-three".