23243581 has 8 divisors (see below), whose sum is σ = 23803200. Its totient is φ = 22689600.

The previous prime is 23243543. The next prime is 23243599. The reversal of 23243581 is 18534232.

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

It is a cyclic number.

It is not a de Polignac number, because 23243581 - 2⁷ = 23243453 is a prime.

It is a super-2 number, since 2×23243581² = 1080528115407122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23246581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7605 + ... + 10213.

It is an arithmetic number, because the mean of its divisors is an integer number (2975400).

Almost surely, 2^23243581 is an apocalyptic number.

It is an amenable number.

23243581 is a deficient number, since it is larger than the sum of its proper divisors (559619).

23243581 is a wasteful number, since it uses less digits than its factorization.

23243581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819.

The product of its digits is 5760, while the sum is 28.

The square root of 23243581 is about 4821.1597152552. The cubic root of 23243581 is about 285.3871050374.

The spelling of 23243581 in words is "twenty-three million, two hundred forty-three thousand, five hundred eighty-one".