12915023 has 4 divisors (see below), whose sum is σ = 14089128. Its totient is φ = 11740920.

The previous prime is 12915013. The next prime is 12915031. The reversal of 12915023 is 32051921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32051921 = 11 ⋅2913811.

It is a cyclic number.

It is not a de Polignac number, because 12915023 - 2¹² = 12910927 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 12915023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12915013) 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, 587036 + ... + 587057.

It is an arithmetic number, because the mean of its divisors is an integer number (3522282).

Almost surely, 2^12915023 is an apocalyptic number.

12915023 is a deficient number, since it is larger than the sum of its proper divisors (1174105).

12915023 is a wasteful number, since it uses less digits than its factorization.

12915023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174104.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12915023 is about 3593.7477652167. The cubic root of 12915023 is about 234.6200166700.

Adding to 12915023 its reverse (32051921), we get a palindrome (44966944).

The spelling of 12915023 in words is "twelve million, nine hundred fifteen thousand, twenty-three".