13031143 has 4 divisors (see below), whose sum is σ = 13042008. Its totient is φ = 13020280.

The previous prime is 13031101. The next prime is 13031159. The reversal of 13031143 is 34113031.

13031143 is digitally balanced in base 3, 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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13031143 - 2⁹ = 13030631 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 (13031243) 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, 3373 + ... + 6118.

It is an arithmetic number, because the mean of its divisors is an integer number (3260502).

Almost surely, 2^13031143 is an apocalyptic number.

13031143 is a deficient number, since it is larger than the sum of its proper divisors (10865).

13031143 is an equidigital number, since it uses as much as digits as its factorization.

13031143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10864.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 13031143 is about 3609.8674490901. The cubic root of 13031143 is about 235.3210821536.

Adding to 13031143 its reverse (34113031), we get a palindrome (47144174).

The spelling of 13031143 in words is "thirteen million, thirty-one thousand, one hundred forty-three".