23120591 has 8 divisors (see below), whose sum is σ = 25121040. Its totient is φ = 21151872.

The previous prime is 23120557. The next prime is 23120599. The reversal of 23120591 is 19502132.

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 23120591 - 2¹⁸ = 22858447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23120599) 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 7 ways as a sum of consecutive naturals, for example, 6401 + ... + 9338.

It is an arithmetic number, because the mean of its divisors is an integer number (3140130).

Almost surely, 2^23120591 is an apocalyptic number.

23120591 is a deficient number, since it is larger than the sum of its proper divisors (2000449).

23120591 is a wasteful number, since it uses less digits than its factorization.

23120591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15865.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 23120591 is about 4808.3875675740. The cubic root of 23120591 is about 284.8828532600.

The spelling of 23120591 in words is "twenty-three million, one hundred twenty thousand, five hundred ninety-one".