143232231 has 16 divisors (see below), whose sum is σ = 192697344. Its totient is φ = 94632384.

The previous prime is 143232227. The next prime is 143232263. The reversal of 143232231 is 132232341.

It is not a de Polignac number, because 143232231 - 2² = 143232227 is a prime.

It is a super-2 number, since 2×143232231² = 41030943994474722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 143232198 and 143232207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143232211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231835 + ... + 232451.

It is an arithmetic number, because the mean of its divisors is an integer number (12043584).

Almost surely, 2^143232231 is an apocalyptic number.

143232231 is a deficient number, since it is larger than the sum of its proper divisors (49465113).

143232231 is a wasteful number, since it uses less digits than its factorization.

143232231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190.

The product of its digits is 864, while the sum is 21.

The square root of 143232231 is about 11967.9668699408. The cubic root of 143232231 is about 523.2150794607.

Adding to 143232231 its reverse (132232341), we get a palindrome (275464572).

The spelling of 143232231 in words is "one hundred forty-three million, two hundred thirty-two thousand, two hundred thirty-one".