143688871 has 6 divisors (see below), whose sum is σ = 147678720. Its totient is φ = 139804056.

The previous prime is 143688869. The next prime is 143688931. The reversal of 143688871 is 178886341.

It is not a de Polignac number, because 143688871 - 2¹ = 143688869 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 (143688821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51111 + ... + 53848.

It is an arithmetic number, because the mean of its divisors is an integer number (24613120).

Almost surely, 2^143688871 is an apocalyptic number.

143688871 is a deficient number, since it is larger than the sum of its proper divisors (3989849).

143688871 is an equidigital number, since it uses as much as digits as its factorization.

143688871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105033 (or 104996 counting only the distinct ones).

The product of its digits is 258048, while the sum is 46.

The square root of 143688871 is about 11987.0292816861. The cubic root of 143688871 is about 523.7705118960.

The spelling of 143688871 in words is "one hundred forty-three million, six hundred eighty-eight thousand, eight hundred seventy-one".