23065531 has 4 divisors (see below), whose sum is σ = 23121000. Its totient is φ = 23010064.

The previous prime is 23065517. The next prime is 23065543. The reversal of 23065531 is 13556032.

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 23065531 - 2⁹ = 23065019 is a prime.

It is a super-2 number, since 2×23065531² = 1064037440623922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23065496 and 23065505.

It is not an unprimeable number, because it can be changed into a prime (23065631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27106 + ... + 27943.

It is an arithmetic number, because the mean of its divisors is an integer number (5780250).

Almost surely, 2^23065531 is an apocalyptic number.

23065531 is a deficient number, since it is larger than the sum of its proper divisors (55469).

23065531 is an equidigital number, since it uses as much as digits as its factorization.

23065531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55468.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 23065531 is about 4802.6587428215. The cubic root of 23065531 is about 284.6565309339.

The spelling of 23065531 in words is "twenty-three million, sixty-five thousand, five hundred thirty-one".