12520323 has 12 divisors (see below), whose sum is σ = 18123768. Its totient is φ = 8328960.

The previous prime is 12520309. The next prime is 12520337. The reversal of 12520323 is 32302521.

It is an interprime number because it is at equal distance from previous prime (12520309) and next prime (12520337).

It is not a de Polignac number, because 12520323 - 2⁴ = 12520307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12520296 and 12520305.

It is not an unprimeable number, because it can be changed into a prime (12520723) 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 11 ways as a sum of consecutive naturals, for example, 3988 + ... + 6398.

It is an arithmetic number, because the mean of its divisors is an integer number (1510314).

Almost surely, 2^12520323 is an apocalyptic number.

12520323 is a deficient number, since it is larger than the sum of its proper divisors (5603445).

12520323 is a wasteful number, since it uses less digits than its factorization.

12520323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994 (or 2991 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 12520323 is about 3538.4068448950. The cubic root of 12520323 is about 232.2051482588.

Adding to 12520323 its reverse (32302521), we get a palindrome (44822844).

The spelling of 12520323 in words is "twelve million, five hundred twenty thousand, three hundred twenty-three".