136831143 has 8 divisors (see below), whose sum is σ = 187372528. Its totient is φ = 88755264.

The previous prime is 136831133. The next prime is 136831153. The reversal of 136831143 is 341138631.

It is an interprime number because it is at equal distance from previous prime (136831133) and next prime (136831153).

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

It is not a de Polignac number, because 136831143 - 2⁵ = 136831111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136831143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136831133) 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 7 ways as a sum of consecutive naturals, for example, 616246 + ... + 616467.

It is an arithmetic number, because the mean of its divisors is an integer number (23421566).

Almost surely, 2^136831143 is an apocalyptic number.

136831143 is a deficient number, since it is larger than the sum of its proper divisors (50541385).

136831143 is a wasteful number, since it uses less digits than its factorization.

136831143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232753.

The product of its digits is 5184, while the sum is 30.

The square root of 136831143 is about 11697.4844731677. The cubic root of 136831143 is about 515.3017906276.

Adding to 136831143 its reverse (341138631), we get a palindrome (477969774).

The spelling of 136831143 in words is "one hundred thirty-six million, eight hundred thirty-one thousand, one hundred forty-three".