143871967 has 2 divisors, whose sum is σ = 143871968. Its totient is φ = 143871966.

The previous prime is 143871943. The next prime is 143871979. The reversal of 143871967 is 769178341.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143871967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143871997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71935983 + 71935984.

It is an arithmetic number, because the mean of its divisors is an integer number (71935984).

Almost surely, 2^143871967 is an apocalyptic number.

143871967 is a deficient number, since it is larger than the sum of its proper divisors (1).

143871967 is an equidigital number, since it uses as much as digits as its factorization.

143871967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 46.

The square root of 143871967 is about 11994.6641053428. The cubic root of 143871967 is about 523.9928895467.

The spelling of 143871967 in words is "one hundred forty-three million, eight hundred seventy-one thousand, nine hundred sixty-seven".