13523907 has 16 divisors (see below), whose sum is σ = 18784160. Its totient is φ = 8646912.

The previous prime is 13523903. The next prime is 13523911. The reversal of 13523907 is 70932531.

13523907 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13523903) and next prime (13523911).

It is not a de Polignac number, because 13523907 - 2² = 13523903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13523903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7269 + ... + 8937.

It is an arithmetic number, because the mean of its divisors is an integer number (1174010).

Almost surely, 2^13523907 is an apocalyptic number.

13523907 is a deficient number, since it is larger than the sum of its proper divisors (5260253).

13523907 is a wasteful number, since it uses less digits than its factorization.

13523907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 13523907 is about 3677.4865057536. The cubic root of 13523907 is about 238.2506304516.

It can be divided in two parts, 135 and 23907, that added together give a palindrome (24042).

The spelling of 13523907 in words is "thirteen million, five hundred twenty-three thousand, nine hundred seven".