143119861 has 2 divisors, whose sum is σ = 143119862. Its totient is φ = 143119860.

The previous prime is 143119859. The next prime is 143119903. The reversal of 143119861 is 168911341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121682961 + 21436900 = 11031^2 + 4630^2 .

It is a cyclic number.

It is not a de Polignac number, because 143119861 - 2¹ = 143119859 is a prime.

It is a super-3 number, since 3×143119861³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 143119859, 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 (143119061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71559930 + 71559931.

It is an arithmetic number, because the mean of its divisors is an integer number (71559931).

Almost surely, 2^143119861 is an apocalyptic number.

It is an amenable number.

143119861 is a deficient number, since it is larger than the sum of its proper divisors (1).

143119861 is an equidigital number, since it uses as much as digits as its factorization.

143119861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 34.

The square root of 143119861 is about 11963.2713335442. The cubic root of 143119861 is about 523.0782176666.

The spelling of 143119861 in words is "one hundred forty-three million, one hundred nineteen thousand, eight hundred sixty-one".