143320361 has 2 divisors, whose sum is σ = 143320362. Its totient is φ = 143320360.

The previous prime is 143320357. The next prime is 143320367. The reversal of 143320361 is 163023341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130965136 + 12355225 = 11444^2 + 3515^2 .

It is a cyclic number.

It is not a de Polignac number, because 143320361 - 2² = 143320357 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (143320367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71660180 + 71660181.

It is an arithmetic number, because the mean of its divisors is an integer number (71660181).

Almost surely, 2^143320361 is an apocalyptic number.

It is an amenable number.

143320361 is a deficient number, since it is larger than the sum of its proper divisors (1).

143320361 is an equidigital number, since it uses as much as digits as its factorization.

143320361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 143320361 is about 11971.6482156802. The cubic root of 143320361 is about 523.3223679078.

The spelling of 143320361 in words is "one hundred forty-three million, three hundred twenty thousand, three hundred sixty-one".