143879431 has 4 divisors (see below), whose sum is σ = 144187992. Its totient is φ = 143570872.

The previous prime is 143879413. The next prime is 143879473. The reversal of 143879431 is 134978341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134978341 = 2917 ⋅46273.

It is a cyclic number.

It is not a de Polignac number, because 143879431 - 2⁵ = 143879399 is a prime.

It is a super-2 number, since 2×143879431² = 41402581329767522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143879231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153580 + ... + 154513.

It is an arithmetic number, because the mean of its divisors is an integer number (36046998).

Almost surely, 2^143879431 is an apocalyptic number.

143879431 is a deficient number, since it is larger than the sum of its proper divisors (308561).

143879431 is an equidigital number, since it uses as much as digits as its factorization.

143879431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308560.

The product of its digits is 72576, while the sum is 40.

The square root of 143879431 is about 11994.9752396576. The cubic root of 143879431 is about 524.0019508794.

The spelling of 143879431 in words is "one hundred forty-three million, eight hundred seventy-nine thousand, four hundred thirty-one".