13540023 has 18 divisors (see below), whose sum is σ = 22751664. Its totient is φ = 7736904.

The previous prime is 13540001. The next prime is 13540073. The reversal of 13540023 is 32004531.

13540023 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13540023 - 2⁵ = 13539991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13539978 and 13540005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13540073) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14911 + ... + 15792.

Almost surely, 2^13540023 is an apocalyptic number.

13540023 is a deficient number, since it is larger than the sum of its proper divisors (9211641).

13540023 is a wasteful number, since it uses less digits than its factorization.

13540023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30723 (or 30713 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 13540023 is about 3679.6770238704. The cubic root of 13540023 is about 238.3452313924.

Adding to 13540023 its reverse (32004531), we get a palindrome (45544554).

The spelling of 13540023 in words is "thirteen million, five hundred forty thousand, twenty-three".