13131473 has 4 divisors (see below), whose sum is σ = 13165620. Its totient is φ = 13097328.

The previous prime is 13131467. The next prime is 13131479. The reversal of 13131473 is 37413131.

13131473 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, and also an emirpimes, since its reverse is a distinct semiprime: 37413131 = 7 ⋅5344733.

It is an interprime number because it is at equal distance from previous prime (13131467) and next prime (13131479).

It can be written as a sum of positive squares in 2 ways, for example, as 5607424 + 7524049 = 2368^2 + 2743^2 .

It is a cyclic number.

It is not a de Polignac number, because 13131473 - 2²⁰ = 12082897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13131479) 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, 16490 + ... + 17267.

It is an arithmetic number, because the mean of its divisors is an integer number (3291405).

Almost surely, 2^13131473 is an apocalyptic number.

It is an amenable number.

13131473 is a deficient number, since it is larger than the sum of its proper divisors (34147).

13131473 is an equidigital number, since it uses as much as digits as its factorization.

13131473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34146.

The product of its digits is 756, while the sum is 23.

The square root of 13131473 is about 3623.7374353007. The cubic root of 13131473 is about 235.9234705896.

The spelling of 13131473 in words is "thirteen million, one hundred thirty-one thousand, four hundred seventy-three".