13151623 has 4 divisors (see below), whose sum is σ = 13191688. Its totient is φ = 13111560.

The previous prime is 13151617. The next prime is 13151627. The reversal of 13151623 is 32615131.

It is a happy number.

13151623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13151623 - 2⁹ = 13151111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13151594 and 13151603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13151627) 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, 19536 + ... + 20197.

It is an arithmetic number, because the mean of its divisors is an integer number (3297922).

Almost surely, 2^13151623 is an apocalyptic number.

13151623 is a deficient number, since it is larger than the sum of its proper divisors (40065).

13151623 is an equidigital number, since it uses as much as digits as its factorization.

13151623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40064.

The product of its digits is 540, while the sum is 22.

The square root of 13151623 is about 3626.5166482453. The cubic root of 13151623 is about 236.0440823045.

Adding to 13151623 its reverse (32615131), we get a palindrome (45766754).

The spelling of 13151623 in words is "thirteen million, one hundred fifty-one thousand, six hundred twenty-three".