13131545 has 16 divisors (see below), whose sum is σ = 18351360. Its totient is φ = 8833344.

The previous prime is 13131541. The next prime is 13131553. The reversal of 13131545 is 54513131.

13131545 is digitally balanced in base 2, base 3 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13131545 - 2² = 13131541 is a prime.

13131545 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 13131545.

It is not an unprimeable number, because it can be changed into a prime (13131541) 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, 1685 + ... + 5394.

It is an arithmetic number, because the mean of its divisors is an integer number (1146960).

Almost surely, 2^13131545 is an apocalyptic number.

It is an amenable number.

13131545 is a deficient number, since it is larger than the sum of its proper divisors (5219815).

13131545 is an equidigital number, since it uses as much as digits as its factorization.

13131545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7144.

The product of its digits is 900, while the sum is 23.

The square root of 13131545 is about 3623.7473697817. The cubic root of 13131545 is about 235.9239017790.

Adding to 13131545 its reverse (54513131), we get a palindrome (67644676).

The spelling of 13131545 in words is "thirteen million, one hundred thirty-one thousand, five hundred forty-five".