143030231 has 4 divisors (see below), whose sum is σ = 151443792. Its totient is φ = 134616672.

The previous prime is 143030171. The next prime is 143030257. The reversal of 143030231 is 132030341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132030341 = 83 ⋅1590727.

It is a cyclic number.

It is not a de Polignac number, because 143030231 - 2²² = 138835927 is a prime.

It is a super-2 number, since 2×143030231² = 40915293959826722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 8413543 = 143030231 / (1 + 4 + 3 + 0 + 3 + 0 + 2 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143030131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4206755 + ... + 4206788.

It is an arithmetic number, because the mean of its divisors is an integer number (37860948).

Almost surely, 2^143030231 is an apocalyptic number.

143030231 is a deficient number, since it is larger than the sum of its proper divisors (8413561).

143030231 is an equidigital number, since it uses as much as digits as its factorization.

143030231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8413560.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 143030231 is about 11959.5246979134. The cubic root of 143030231 is about 522.9690008400.

Adding to 143030231 its reverse (132030341), we get a palindrome (275060572).

The spelling of 143030231 in words is "one hundred forty-three million, thirty thousand, two hundred thirty-one".