231838206 has 32 divisors (see below), whose sum is σ = 484697088. Its totient is φ = 73788000.

The previous prime is 231838193. The next prime is 231838213. The reversal of 231838206 is 602838132.

It is a super-2 number, since 2×231838206² = 107497907522596872, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102520 + ... + 104756.

It is an arithmetic number, because the mean of its divisors is an integer number (15146784).

Almost surely, 2^231838206 is an apocalyptic number.

231838206 is an abundant number, since it is smaller than the sum of its proper divisors (252858882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231838206 is a wasteful number, since it uses less digits than its factorization.

231838206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 231838206 is about 15226.2341371726. The cubic root of 231838206 is about 614.3204921411.

The spelling of 231838206 in words is "two hundred thirty-one million, eight hundred thirty-eight thousand, two hundred six".