23431066 has 48 divisors (see below), whose sum is σ = 41477184. Its totient is φ = 9871488.

The previous prime is 23431063. The next prime is 23431073. The reversal of 23431066 is 66013432.

It is a self number, because there is not a number n which added to its sum of digits gives 23431066.

It is not an unprimeable number, because it can be changed into a prime (23431061) 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 23 ways as a sum of consecutive naturals, for example, 282261 + ... + 282343.

It is an arithmetic number, because the mean of its divisors is an integer number (864108).

Almost surely, 2^23431066 is an apocalyptic number.

23431066 is a deficient number, since it is larger than the sum of its proper divisors (18046118).

23431066 is a wasteful number, since it uses less digits than its factorization.

23431066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 23431066 is about 4840.5646364861. The cubic root of 23431066 is about 286.1523712499.

Adding to 23431066 its reverse (66013432), we get a palindrome (89444498).

The spelling of 23431066 in words is "twenty-three million, four hundred thirty-one thousand, sixty-six".