231205006 has 32 divisors (see below), whose sum is σ = 367762176. Its totient is φ = 108864000.

The previous prime is 231205003. The next prime is 231205021. The reversal of 231205006 is 600502132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231205003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427096 + ... + 427636.

It is an arithmetic number, because the mean of its divisors is an integer number (11492568).

Almost surely, 2^231205006 is an apocalyptic number.

231205006 is a deficient number, since it is larger than the sum of its proper divisors (136557170).

231205006 is a wasteful number, since it uses less digits than its factorization.

231205006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 231205006 is about 15205.4268601707. The cubic root of 231205006 is about 613.7607017352.

Adding to 231205006 its reverse (600502132), we get a palindrome (831707138).

The spelling of 231205006 in words is "two hundred thirty-one million, two hundred five thousand, six".