23481571 has 4 divisors (see below), whose sum is σ = 23518512. Its totient is φ = 23444632.

The previous prime is 23481559. The next prime is 23481581. The reversal of 23481571 is 17518432.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23481571 - 2¹⁷ = 23350499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23481581) 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, 17500 + ... + 18793.

It is an arithmetic number, because the mean of its divisors is an integer number (5879628).

Almost surely, 2^23481571 is an apocalyptic number.

23481571 is a deficient number, since it is larger than the sum of its proper divisors (36941).

23481571 is an equidigital number, since it uses as much as digits as its factorization.

23481571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36940.

The product of its digits is 6720, while the sum is 31.

The square root of 23481571 is about 4845.7786783963. The cubic root of 23481571 is about 286.3578214872.

The spelling of 23481571 in words is "twenty-three million, four hundred eighty-one thousand, five hundred seventy-one".