143431879 has 2 divisors, whose sum is σ = 143431880. Its totient is φ = 143431878.

The previous prime is 143431867. The next prime is 143431889. The reversal of 143431879 is 978134341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 143431879 - 2⁹ = 143431367 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143431819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71715939 + 71715940.

It is an arithmetic number, because the mean of its divisors is an integer number (71715940).

Almost surely, 2^143431879 is an apocalyptic number.

143431879 is a deficient number, since it is larger than the sum of its proper divisors (1).

143431879 is an equidigital number, since it uses as much as digits as its factorization.

143431879 is an evil number, because the sum of its binary digits is even.

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

The square root of 143431879 is about 11976.3048975884. The cubic root of 143431879 is about 523.4580656163.

The spelling of 143431879 in words is "one hundred forty-three million, four hundred thirty-one thousand, eight hundred seventy-nine".