143061361 has 2 divisors, whose sum is σ = 143061362. Its totient is φ = 143061360.

The previous prime is 143061343. The next prime is 143061377. The reversal of 143061361 is 163160341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105165025 + 37896336 = 10255^2 + 6156^2 .

It is a cyclic number.

It is not a de Polignac number, because 143061361 - 2⁵ = 143061329 is a prime.

It is a super-2 number, since 2×143061361² = 40933106022344642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143061761) 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, 71530680 + 71530681.

It is an arithmetic number, because the mean of its divisors is an integer number (71530681).

Almost surely, 2^143061361 is an apocalyptic number.

It is an amenable number.

143061361 is a deficient number, since it is larger than the sum of its proper divisors (1).

143061361 is an equidigital number, since it uses as much as digits as its factorization.

143061361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 143061361 is about 11960.8261002324. The cubic root of 143061361 is about 523.0069388431.

The spelling of 143061361 in words is "one hundred forty-three million, sixty-one thousand, three hundred sixty-one".