13135143 has 8 divisors (see below), whose sum is σ = 20015488. Its totient is φ = 7505784.

The previous prime is 13135141. The next prime is 13135153. The reversal of 13135143 is 34153131.

13135143 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13135143 - 2¹ = 13135141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 625483 = 13135143 / (1 + 3 + 1 + 3 + 5 + 1 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13135141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312721 + ... + 312762.

It is an arithmetic number, because the mean of its divisors is an integer number (2501936).

Almost surely, 2^13135143 is an apocalyptic number.

13135143 is a deficient number, since it is larger than the sum of its proper divisors (6880345).

13135143 is an equidigital number, since it uses as much as digits as its factorization.

13135143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625493.

The product of its digits is 540, while the sum is 21.

The square root of 13135143 is about 3624.2437831912. The cubic root of 13135143 is about 235.9454472682.

Adding to 13135143 its reverse (34153131), we get a palindrome (47288274).

The spelling of 13135143 in words is "thirteen million, one hundred thirty-five thousand, one hundred forty-three".