231042066 has 8 divisors (see below), whose sum is σ = 462084144. Its totient is φ = 77014020.

The previous prime is 231042059. The next prime is 231042067. The reversal of 231042066 is 660240132.

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

231042066 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (231042067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19253500 + ... + 19253511.

It is an arithmetic number, because the mean of its divisors is an integer number (57760518).

Almost surely, 2^231042066 is an apocalyptic number.

231042066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

231042066 is a wasteful number, since it uses less digits than its factorization.

231042066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38507016.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 231042066 is about 15200.0679603744. The cubic root of 231042066 is about 613.6164867626.

Adding to 231042066 its reverse (660240132), we get a palindrome (891282198).

The spelling of 231042066 in words is "two hundred thirty-one million, forty-two thousand, sixty-six".