143712317 has 4 divisors (see below), whose sum is σ = 164242656. Its totient is φ = 123181980.

The previous prime is 143712293. The next prime is 143712319. The reversal of 143712317 is 713217341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 713217341 = 31 ⋅23007011.

It is a cyclic number.

It is not a de Polignac number, because 143712317 - 2⁸ = 143712061 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 143712317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143712319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10265159 + ... + 10265172.

It is an arithmetic number, because the mean of its divisors is an integer number (41060664).

Almost surely, 2^143712317 is an apocalyptic number.

It is an amenable number.

143712317 is a deficient number, since it is larger than the sum of its proper divisors (20530339).

143712317 is an equidigital number, since it uses as much as digits as its factorization.

143712317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20530338.

The product of its digits is 3528, while the sum is 29.

The square root of 143712317 is about 11988.0072155467. The cubic root of 143712317 is about 523.7989985734.

Adding to 143712317 its reverse (713217341), we get a palindrome (856929658).

The spelling of 143712317 in words is "one hundred forty-three million, seven hundred twelve thousand, three hundred seventeen".