143041981 has 8 divisors (see below), whose sum is σ = 144552800. Its totient is φ = 141538320.

The previous prime is 143041933. The next prime is 143041993. The reversal of 143041981 is 189140341.

143041981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143041981 - 2⁹ = 143041469 is a prime.

It is a super-2 number, since 2×143041981² = 40922016656808722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143141981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44455 + ... + 47563.

It is an arithmetic number, because the mean of its divisors is an integer number (18069100).

Almost surely, 2^143041981 is an apocalyptic number.

It is an amenable number.

143041981 is a deficient number, since it is larger than the sum of its proper divisors (1510819).

143041981 is a wasteful number, since it uses less digits than its factorization.

143041981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 143041981 is about 11960.0159280830. The cubic root of 143041981 is about 522.9833211634.

The spelling of 143041981 in words is "one hundred forty-three million, forty-one thousand, nine hundred eighty-one".