23120543 has 4 divisors (see below), whose sum is σ = 24125808. Its totient is φ = 22115280.

The previous prime is 23120501. The next prime is 23120551. The reversal of 23120543 is 34502132.

It is a happy number.

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 23120543 - 2¹⁰ = 23119519 is a prime.

It is a super-2 number, since 2×23120543² = 1069119017229698, 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 (23120443) 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, 502598 + ... + 502643.

It is an arithmetic number, because the mean of its divisors is an integer number (6031452).

Almost surely, 2^23120543 is an apocalyptic number.

23120543 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23120543 is a deficient number, since it is larger than the sum of its proper divisors (1005265).

23120543 is a wasteful number, since it uses less digits than its factorization.

23120543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005264.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 23120543 is about 4808.3825762932. The cubic root of 23120543 is about 284.8826561142.

Adding to 23120543 its reverse (34502132), we get a palindrome (57622675).

The spelling of 23120543 in words is "twenty-three million, one hundred twenty thousand, five hundred forty-three".