13145671 has 24 divisors (see below), whose sum is σ = 17277840. Its totient is φ = 9890160.

The previous prime is 13145651. The next prime is 13145681. The reversal of 13145671 is 17654131.

It is not a de Polignac number, because 13145671 - 2⁹ = 13145159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 453285 + ... + 453313.

It is an arithmetic number, because the mean of its divisors is an integer number (719910).

Almost surely, 2^13145671 is an apocalyptic number.

13145671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13145671 is a deficient number, since it is larger than the sum of its proper divisors (4132169).

13145671 is an frugal number, since it uses more digits than its factorization.

13145671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 47 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 13145671 is about 3625.6959331968. The cubic root of 13145671 is about 236.0084682875.

The spelling of 13145671 in words is "thirteen million, one hundred forty-five thousand, six hundred seventy-one".