23138463 has 4 divisors (see below), whose sum is σ = 30851288. Its totient is φ = 15425640.

The previous prime is 23138461. The next prime is 23138501. The reversal of 23138463 is 36483132.

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

It is not a de Polignac number, because 23138463 - 2¹ = 23138461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23138463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23138461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3856408 + ... + 3856413.

It is an arithmetic number, because the mean of its divisors is an integer number (7712822).

Almost surely, 2^23138463 is an apocalyptic number.

23138463 is a deficient number, since it is larger than the sum of its proper divisors (7712825).

23138463 is an equidigital number, since it uses as much as digits as its factorization.

23138463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7712824.

The product of its digits is 10368, while the sum is 30.

The square root of 23138463 is about 4810.2456278240. The cubic root of 23138463 is about 284.9562382792.

The spelling of 23138463 in words is "twenty-three million, one hundred thirty-eight thousand, four hundred sixty-three".