13146823 has 4 divisors (see below), whose sum is σ = 13718448. Its totient is φ = 12575200.

The previous prime is 13146811. The next prime is 13146827. The reversal of 13146823 is 32864131.

13146823 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32864131 = 197 ⋅166823.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13146823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13146791 and 13146800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13146827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285778 + ... + 285823.

It is an arithmetic number, because the mean of its divisors is an integer number (3429612).

Almost surely, 2^13146823 is an apocalyptic number.

13146823 is a deficient number, since it is larger than the sum of its proper divisors (571625).

13146823 is an equidigital number, since it uses as much as digits as its factorization.

13146823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571624.

The product of its digits is 3456, while the sum is 28.

The square root of 13146823 is about 3625.8547957689. The cubic root of 13146823 is about 236.0153621619.

The spelling of 13146823 in words is "thirteen million, one hundred forty-six thousand, eight hundred twenty-three".