206326813 has 32 divisors (see below), whose sum is σ = 271060992. Its totient is φ = 152275200.

The previous prime is 206326811. The next prime is 206326823. The reversal of 206326813 is 318623602.

It is not a de Polignac number, because 206326813 - 2¹ = 206326811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206326811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199608 + ... + 200638.

It is an arithmetic number, because the mean of its divisors is an integer number (8470656).

Almost surely, 2^206326813 is an apocalyptic number.

206326813 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

206326813 is a deficient number, since it is larger than the sum of its proper divisors (64734179).

206326813 is a wasteful number, since it uses less digits than its factorization.

206326813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 206326813 is about 14364.0806527950. The cubic root of 206326813 is about 590.9062134362.

The spelling of 206326813 in words is "two hundred six million, three hundred twenty-six thousand, eight hundred thirteen".