143043445381 has 2 divisors, whose sum is σ = 143043445382. Its totient is φ = 143043445380.

The previous prime is 143043445357. The next prime is 143043445387. The reversal of 143043445381 is 183544340341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142739640481 + 303804900 = 377809^2 + 17430^2 .

It is a cyclic number.

It is not a de Polignac number, because 143043445381 - 2²⁵ = 143009890949 is a prime.

It is a super-2 number, since 2×143043445381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143043445387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71521722690 + 71521722691.

It is an arithmetic number, because the mean of its divisors is an integer number (71521722691).

Almost surely, 2^143043445381 is an apocalyptic number.

It is an amenable number.

143043445381 is a deficient number, since it is larger than the sum of its proper divisors (1).

143043445381 is an equidigital number, since it uses as much as digits as its factorization.

143043445381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 143043445381 in words is "one hundred forty-three billion, forty-three million, four hundred forty-five thousand, three hundred eighty-one".