231106666 has 8 divisors (see below), whose sum is σ = 396182880. Its totient is φ = 99045708.

The previous prime is 231106649. The next prime is 231106693. The reversal of 231106666 is 666601132.

231106666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8253796 + ... + 8253823.

It is an arithmetic number, because the mean of its divisors is an integer number (49522860).

Almost surely, 2^231106666 is an apocalyptic number.

231106666 is a deficient number, since it is larger than the sum of its proper divisors (165076214).

231106666 is a wasteful number, since it uses less digits than its factorization.

231106666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16507628.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 231106666 is about 15202.1928023558. The cubic root of 231106666 is about 613.6736710550.

Adding to 231106666 its reverse (666601132), we get a palindrome (897707798).

It can be divided in two parts, 2311066 and 66, that added together give a palindrome (2311132).

The spelling of 231106666 in words is "two hundred thirty-one million, one hundred six thousand, six hundred sixty-six".