143224861 has 8 divisors (see below), whose sum is σ = 154348544. Its totient is φ = 132116400.

The previous prime is 143224853. The next prime is 143224871. The reversal of 143224861 is 168422341.

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

It is not a de Polignac number, because 143224861 - 2³ = 143224853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143224811) 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 7 ways as a sum of consecutive naturals, for example, 22540 + ... + 28186.

It is an arithmetic number, because the mean of its divisors is an integer number (19293568).

Almost surely, 2^143224861 is an apocalyptic number.

It is an amenable number.

143224861 is a deficient number, since it is larger than the sum of its proper divisors (11123683).

143224861 is a wasteful number, since it uses less digits than its factorization.

143224861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7611.

The product of its digits is 9216, while the sum is 31.

The square root of 143224861 is about 11967.6589607158. The cubic root of 143224861 is about 523.2061053137.

It can be divided in two parts, 143 and 224861, that multiplied together give a palindrome (32155123).

The spelling of 143224861 in words is "one hundred forty-three million, two hundred twenty-four thousand, eight hundred sixty-one".