13813023 has 32 divisors (see below), whose sum is σ = 21998592. Its totient is φ = 7545600.

The previous prime is 13813013. The next prime is 13813039. The reversal of 13813023 is 32031831.

It is a happy number.

It is not a de Polignac number, because 13813023 - 2⁵ = 13812991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13813013) 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 31 ways as a sum of consecutive naturals, for example, 52390 + ... + 52652.

It is an arithmetic number, because the mean of its divisors is an integer number (687456).

Almost surely, 2^13813023 is an apocalyptic number.

13813023 is a deficient number, since it is larger than the sum of its proper divisors (8185569).

13813023 is a wasteful number, since it uses less digits than its factorization.

13813023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 13813023 is about 3716.5875477378. The cubic root of 13813023 is about 239.9364588731.

Adding to 13813023 its reverse (32031831), we get a palindrome (45844854).

The spelling of 13813023 in words is "thirteen million, eight hundred thirteen thousand, twenty-three".