23013985 has 4 divisors (see below), whose sum is σ = 27616788. Its totient is φ = 18411184.

The previous prime is 23013983. The next prime is 23014003. The reversal of 23013985 is 58931032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16378209 + 6635776 = 4047^2 + 2576^2 .

It is a cyclic number.

It is not a de Polignac number, because 23013985 - 2¹ = 23013983 is a prime.

It is a super-3 number, since 3×23013985³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23013983) 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, 2301394 + ... + 2301403.

It is an arithmetic number, because the mean of its divisors is an integer number (6904197).

Almost surely, 2^23013985 is an apocalyptic number.

It is an amenable number.

23013985 is a deficient number, since it is larger than the sum of its proper divisors (4602803).

23013985 is an equidigital number, since it uses as much as digits as its factorization.

23013985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4602802.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 23013985 is about 4797.2893387829. The cubic root of 23013985 is about 284.4443261323. Note that the first 3 decimals are identical.

The spelling of 23013985 in words is "twenty-three million, thirteen thousand, nine hundred eighty-five".