13145823 has 12 divisors (see below), whose sum is σ = 19117800. Its totient is φ = 8704176.

The previous prime is 13145819. The next prime is 13145833. The reversal of 13145823 is 32854131.

It is a happy number.

It is not a de Polignac number, because 13145823 - 2² = 13145819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3561 + ... + 6242.

It is an arithmetic number, because the mean of its divisors is an integer number (1593150).

Almost surely, 2^13145823 is an apocalyptic number.

13145823 is a deficient number, since it is larger than the sum of its proper divisors (5971977).

13145823 is a wasteful number, since it uses less digits than its factorization.

13145823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9958 (or 9955 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 13145823 is about 3625.7168946293. The cubic root of 13145823 is about 236.0093779190.

Adding to 13145823 its reverse (32854131), we get a palindrome (45999954).

It can be divided in two parts, 131 and 45823, that added together give a palindrome (45954).

The spelling of 13145823 in words is "thirteen million, one hundred forty-five thousand, eight hundred twenty-three".