23243515 has 8 divisors (see below), whose sum is σ = 28572768. Its totient is φ = 18141120.

The previous prime is 23243497. The next prime is 23243543. The reversal of 23243515 is 51534232.

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

It is not a de Polignac number, because 23243515 - 2⁷ = 23243387 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 23243515.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56487 + ... + 56896.

It is an arithmetic number, because the mean of its divisors is an integer number (3571596).

Almost surely, 2^23243515 is an apocalyptic number.

23243515 is a deficient number, since it is larger than the sum of its proper divisors (5329253).

23243515 is a wasteful number, since it uses less digits than its factorization.

23243515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113429.

The product of its digits is 3600, while the sum is 25.

The square root of 23243515 is about 4821.1528704243. The cubic root of 23243515 is about 285.3868349188.

Adding to 23243515 its reverse (51534232), we get a palindrome (74777747).

The spelling of 23243515 in words is "twenty-three million, two hundred forty-three thousand, five hundred fifteen".