23491065 has 32 divisors (see below), whose sum is σ = 40763520. Its totient is φ = 11483136.

The previous prime is 23491057. The next prime is 23491067. The reversal of 23491065 is 56019432.

It is not a de Polignac number, because 23491065 - 2³ = 23491057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23491067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34569 + ... + 35241.

It is an arithmetic number, because the mean of its divisors is an integer number (1273860).

Almost surely, 2^23491065 is an apocalyptic number.

It is an amenable number.

23491065 is a deficient number, since it is larger than the sum of its proper divisors (17272455).

23491065 is a wasteful number, since it uses less digits than its factorization.

23491065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 23491065 is about 4846.7581949175. The cubic root of 23491065 is about 286.3964094056.

The spelling of 23491065 in words is "twenty-three million, four hundred ninety-one thousand, sixty-five".