143020231 has 8 divisors (see below), whose sum is σ = 144084528. Its totient is φ = 141960000.

The previous prime is 143020223. The next prime is 143020247. The reversal of 143020231 is 132020341.

It is a happy number.

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 143020231 - 2³ = 143020223 is a prime.

It is a super-2 number, since 2×143020231² = 40909572950586722, 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 (143020211) 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, 109281 + ... + 110581.

It is an arithmetic number, because the mean of its divisors is an integer number (18010566).

Almost surely, 2^143020231 is an apocalyptic number.

143020231 is a deficient number, since it is larger than the sum of its proper divisors (1064297).

143020231 is a wasteful number, since it uses less digits than its factorization.

143020231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 143020231 is about 11959.1066137902. The cubic root of 143020231 is about 522.9568127129.

Adding to 143020231 its reverse (132020341), we get a palindrome (275040572).

The spelling of 143020231 in words is "one hundred forty-three million, twenty thousand, two hundred thirty-one".