143687871 has 16 divisors (see below), whose sum is σ = 215789920. Its totient is φ = 94478400.

The previous prime is 143687867. The next prime is 143687881. The reversal of 143687871 is 178786341.

It is not a de Polignac number, because 143687871 - 2² = 143687867 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143687801) 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 15 ways as a sum of consecutive naturals, for example, 34480 + ... + 38421.

It is an arithmetic number, because the mean of its divisors is an integer number (13486870).

Almost surely, 2^143687871 is an apocalyptic number.

143687871 is a deficient number, since it is larger than the sum of its proper divisors (72102049).

143687871 is an equidigital number, since it uses as much as digits as its factorization.

143687871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72983 (or 72977 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 143687871 is about 11986.9875698609. The cubic root of 143687871 is about 523.7692968361.

The spelling of 143687871 in words is "one hundred forty-three million, six hundred eighty-seven thousand, eight hundred seventy-one".