13140471 has 4 divisors (see below), whose sum is σ = 17520632. Its totient is φ = 8760312.

The previous prime is 13140469. The next prime is 13140487. The reversal of 13140471 is 17404131.

13140471 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 not a de Polignac number, because 13140471 - 2¹ = 13140469 is a prime.

It is a super-3 number, since 3×13140471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13140461) 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, 2190076 + ... + 2190081.

It is an arithmetic number, because the mean of its divisors is an integer number (4380158).

Almost surely, 2^13140471 is an apocalyptic number.

13140471 is a deficient number, since it is larger than the sum of its proper divisors (4380161).

13140471 is an equidigital number, since it uses as much as digits as its factorization.

13140471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380160.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 13140471 is about 3624.9787585585. The cubic root of 13140471 is about 235.9773450914.

The spelling of 13140471 in words is "thirteen million, one hundred forty thousand, four hundred seventy-one".