13431573 has 12 divisors (see below), whose sum is σ = 19476288. Its totient is φ = 8919720.

The previous prime is 13431571. The next prime is 13431577. The reversal of 13431573 is 37513431.

It is not a de Polignac number, because 13431573 - 2¹ = 13431571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315 + ... + 5192.

It is an arithmetic number, because the mean of its divisors is an integer number (1623024).

Almost surely, 2^13431573 is an apocalyptic number.

It is an amenable number.

13431573 is a deficient number, since it is larger than the sum of its proper divisors (6044715).

13431573 is a wasteful number, since it uses less digits than its factorization.

13431573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5784 (or 5781 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 13431573 is about 3664.9110493981. The cubic root of 13431573 is about 237.7071758260.

It can be divided in two parts, 1343 and 1573, that added together give a square (2916 = 54²).

The spelling of 13431573 in words is "thirteen million, four hundred thirty-one thousand, five hundred seventy-three".