206231315 has 4 divisors (see below), whose sum is σ = 247477584. Its totient is φ = 164985048.

The previous prime is 206231309. The next prime is 206231341. The reversal of 206231315 is 513132602.

206231315 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 206231315 - 2⁴ = 206231299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20623127 + ... + 20623136.

It is an arithmetic number, because the mean of its divisors is an integer number (61869396).

Almost surely, 2^206231315 is an apocalyptic number.

206231315 is a deficient number, since it is larger than the sum of its proper divisors (41246269).

206231315 is an equidigital number, since it uses as much as digits as its factorization.

206231315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41246268.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 206231315 is about 14360.7560734106. The cubic root of 206231315 is about 590.8150327357.

Adding to 206231315 its reverse (513132602), we get a palindrome (719363917).

The spelling of 206231315 in words is "two hundred six million, two hundred thirty-one thousand, three hundred fifteen".