23391073 has 8 divisors (see below), whose sum is σ = 24057000. Its totient is φ = 22733568.

The previous prime is 23391061. The next prime is 23391079. The reversal of 23391073 is 37019332.

It can be written as a sum of positive squares in 4 ways, for example, as 4875264 + 18515809 = 2208^2 + 4303^2 .

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 23391073 - 2⁹ = 23390561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23391079) 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, 3753 + ... + 7801.

It is an arithmetic number, because the mean of its divisors is an integer number (3007125).

Almost surely, 2^23391073 is an apocalyptic number.

It is an amenable number.

23391073 is a deficient number, since it is larger than the sum of its proper divisors (665927).

23391073 is a wasteful number, since it uses less digits than its factorization.

23391073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 23391073 is about 4836.4318458963. The cubic root of 23391073 is about 285.9894734255.

The spelling of 23391073 in words is "twenty-three million, three hundred ninety-one thousand, seventy-three".