143131129 has 2 divisors, whose sum is σ = 143131130. Its totient is φ = 143131128.

The previous prime is 143131127. The next prime is 143131141. The reversal of 143131129 is 921131341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117679104 + 25452025 = 10848^2 + 5045^2 .

It is a cyclic number.

It is not a de Polignac number, because 143131129 - 2¹ = 143131127 is a prime.

Together with 143131127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (143131127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71565564 + 71565565.

It is an arithmetic number, because the mean of its divisors is an integer number (71565565).

Almost surely, 2^143131129 is an apocalyptic number.

It is an amenable number.

143131129 is a deficient number, since it is larger than the sum of its proper divisors (1).

143131129 is an equidigital number, since it uses as much as digits as its factorization.

143131129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 25.

The square root of 143131129 is about 11963.7422656960. The cubic root of 143131129 is about 523.0919448335.

The spelling of 143131129 in words is "one hundred forty-three million, one hundred thirty-one thousand, one hundred twenty-nine".