143011947 has 16 divisors (see below), whose sum is σ = 206393600. Its totient is φ = 87560352.

The previous prime is 143011931. The next prime is 143011961. The reversal of 143011947 is 749110341.

It is not a de Polignac number, because 143011947 - 2⁴ = 143011931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143011927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1453 + ... + 16974.

It is an arithmetic number, because the mean of its divisors is an integer number (12899600).

Almost surely, 2^143011947 is an apocalyptic number.

143011947 is a deficient number, since it is larger than the sum of its proper divisors (63381653).

143011947 is a wasteful number, since it uses less digits than its factorization.

143011947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18642.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 143011947 is about 11958.7602618332. The cubic root of 143011947 is about 522.9467156382.

The spelling of 143011947 in words is "one hundred forty-three million, eleven thousand, nine hundred forty-seven".