23123015 has 4 divisors (see below), whose sum is σ = 27747624. Its totient is φ = 18498408.

The previous prime is 23122991. The next prime is 23123029. The reversal of 23123015 is 51032132.

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 23123015 - 2¹² = 23118919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23122984 and 23123002.

It is a congruent number.

It is an unprimeable number.

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, 2312297 + ... + 2312306.

It is an arithmetic number, because the mean of its divisors is an integer number (6936906).

Almost surely, 2^23123015 is an apocalyptic number.

23123015 is a deficient number, since it is larger than the sum of its proper divisors (4624609).

23123015 is an equidigital number, since it uses as much as digits as its factorization.

23123015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4624608.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 23123015 is about 4808.6396205164. The cubic root of 23123015 is about 284.8928087712.

Adding to 23123015 its reverse (51032132), we get a palindrome (74155147).

The spelling of 23123015 in words is "twenty-three million, one hundred twenty-three thousand, fifteen".