23181064 has 32 divisors (see below), whose sum is σ = 48448800. Its totient is φ = 10333440.

The previous prime is 23181023. The next prime is 23181071. The reversal of 23181064 is 46018132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1902 + ... + 7069.

It is an arithmetic number, because the mean of its divisors is an integer number (1514025).

Almost surely, 2^23181064 is an apocalyptic number.

It is an amenable number.

23181064 is an abundant number, since it is smaller than the sum of its proper divisors (25267736).

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

23181064 is a wasteful number, since it uses less digits than its factorization.

23181064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9013 (or 9009 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 23181064 is about 4814.6717437433. The cubic root of 23181064 is about 285.1310118906.

Adding to 23181064 its reverse (46018132), we get a palindrome (69199196).

The spelling of 23181064 in words is "twenty-three million, one hundred eighty-one thousand, sixty-four".