143232161 has 2 divisors, whose sum is σ = 143232162. Its totient is φ = 143232160.

The previous prime is 143232137. The next prime is 143232181. The reversal of 143232161 is 161232341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142945936 + 286225 = 11956^2 + 535^2 .

It is an emirp because it is prime and its reverse (161232341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143232161 - 2¹⁴ = 143215777 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (143232101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71616080 + 71616081.

It is an arithmetic number, because the mean of its divisors is an integer number (71616081).

Almost surely, 2^143232161 is an apocalyptic number.

It is an amenable number.

143232161 is a deficient number, since it is larger than the sum of its proper divisors (1).

143232161 is an equidigital number, since it uses as much as digits as its factorization.

143232161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 143232161 is about 11967.9639454671. The cubic root of 143232161 is about 523.2149942260.

The spelling of 143232161 in words is "one hundred forty-three million, two hundred thirty-two thousand, one hundred sixty-one".