231040205 has 8 divisors (see below), whose sum is σ = 302452704. Its totient is φ = 168029200.

The previous prime is 231040189. The next prime is 231040213. The reversal of 231040205 is 502040132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231040205 - 2⁴ = 231040189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2100311 + ... + 2100420.

It is an arithmetic number, because the mean of its divisors is an integer number (37806588).

Almost surely, 2^231040205 is an apocalyptic number.

It is an amenable number.

231040205 is a deficient number, since it is larger than the sum of its proper divisors (71412499).

231040205 is a wasteful number, since it uses less digits than its factorization.

231040205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4200747.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 231040205 is about 15200.0067434196. The cubic root of 231040205 is about 613.6148392367.

Adding to 231040205 its reverse (502040132), we get a palindrome (733080337).

The spelling of 231040205 in words is "two hundred thirty-one million, forty thousand, two hundred five".