206356231 has 8 divisors (see below), whose sum is σ = 208692000. Its totient is φ = 204026400.

The previous prime is 206356219. The next prime is 206356237. The reversal of 206356231 is 132653602.

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 206356231 - 2⁷ = 206356103 is a prime.

It is a super-2 number, since 2×206356231² = 85165788145050722, which contains 22 as substring.

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 206356231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206356237) 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, 132445 + ... + 133993.

It is an arithmetic number, because the mean of its divisors is an integer number (26086500).

Almost surely, 2^206356231 is an apocalyptic number.

206356231 is a deficient number, since it is larger than the sum of its proper divisors (2335769).

206356231 is a wasteful number, since it uses less digits than its factorization.

206356231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 206356231 is about 14365.1046289263. The cubic root of 206356231 is about 590.9342958307.

The spelling of 206356231 in words is "two hundred six million, three hundred fifty-six thousand, two hundred thirty-one".