143241391 has 2 divisors, whose sum is σ = 143241392. Its totient is φ = 143241390.

The previous prime is 143241389. The next prime is 143241407. The reversal of 143241391 is 193142341.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 143241391 - 2¹ = 143241389 is a prime.

It is a super-2 number, since 2×143241391² = 41036192191229762, which contains 22 as substring.

Together with 143241389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143241311) 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 as a sum of consecutive naturals, namely, 71620695 + 71620696.

It is an arithmetic number, because the mean of its divisors is an integer number (71620696).

Almost surely, 2^143241391 is an apocalyptic number.

143241391 is a deficient number, since it is larger than the sum of its proper divisors (1).

143241391 is an equidigital number, since it uses as much as digits as its factorization.

143241391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 143241391 is about 11968.3495520477. The cubic root of 143241391 is about 523.2262327882.

The spelling of 143241391 in words is "one hundred forty-three million, two hundred forty-one thousand, three hundred ninety-one".