143157317 has 2 divisors, whose sum is σ = 143157318. Its totient is φ = 143157316.

The previous prime is 143157283. The next prime is 143157319. The reversal of 143157317 is 713751341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97337956 + 45819361 = 9866^2 + 6769^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143157317 is a prime.

Together with 143157319, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143157319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71578658 + 71578659.

It is an arithmetic number, because the mean of its divisors is an integer number (71578659).

Almost surely, 2^143157317 is an apocalyptic number.

It is an amenable number.

143157317 is a deficient number, since it is larger than the sum of its proper divisors (1).

143157317 is an equidigital number, since it uses as much as digits as its factorization.

143157317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 32.

The square root of 143157317 is about 11964.8366892323. The cubic root of 143157317 is about 523.1238454098.

The spelling of 143157317 in words is "one hundred forty-three million, one hundred fifty-seven thousand, three hundred seventeen".