13123523 has 8 divisors (see below), whose sum is σ = 15304800. Its totient is φ = 11248440.

The previous prime is 13123463. The next prime is 13123529. The reversal of 13123523 is 32532131.

It is not a de Polignac number, because 13123523 - 2⁶ = 13123459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13123495 and 13123504.

It is not an unprimeable number, because it can be changed into a prime (13123529) 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, 18788 + ... + 19473.

It is an arithmetic number, because the mean of its divisors is an integer number (1913100).

Almost surely, 2^13123523 is an apocalyptic number.

13123523 is a deficient number, since it is larger than the sum of its proper divisors (2181277).

13123523 is an frugal number, since it uses more digits than its factorization.

13123523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38282 (or 38268 counting only the distinct ones).

The product of its digits is 540, while the sum is 20.

The square root of 13123523 is about 3622.6403354460. The cubic root of 13123523 is about 235.8758503867.

Adding to 13123523 its reverse (32532131), we get a palindrome (45655654).

The spelling of 13123523 in words is "thirteen million, one hundred twenty-three thousand, five hundred twenty-three".