23217461 has 4 divisors (see below), whose sum is σ = 24583212. Its totient is φ = 21851712.

The previous prime is 23217437. The next prime is 23217473. The reversal of 23217461 is 16471232.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21215236 + 2002225 = 4606^2 + 1415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23217461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23217461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23217421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 682850 + ... + 682883.

It is an arithmetic number, because the mean of its divisors is an integer number (6145803).

Almost surely, 2^23217461 is an apocalyptic number.

It is an amenable number.

23217461 is a deficient number, since it is larger than the sum of its proper divisors (1365751).

23217461 is a wasteful number, since it uses less digits than its factorization.

23217461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365750.

The product of its digits is 2016, while the sum is 26.

The square root of 23217461 is about 4818.4500620013. The cubic root of 23217461 is about 285.2801636099.

Adding to 23217461 its reverse (16471232), we get a palindrome (39688693).

The spelling of 23217461 in words is "twenty-three million, two hundred seventeen thousand, four hundred sixty-one".