143323431 has 4 divisors (see below), whose sum is σ = 191097912. Its totient is φ = 95548952.

The previous prime is 143323399. The next prime is 143323451. The reversal of 143323431 is 134323341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 143323431 - 2⁵ = 143323399 is a prime.

It is a super-2 number, since 2×143323431² = 41083211747223522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143323451) 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 3 ways as a sum of consecutive naturals, for example, 23887236 + ... + 23887241.

It is an arithmetic number, because the mean of its divisors is an integer number (47774478).

Almost surely, 2^143323431 is an apocalyptic number.

143323431 is a deficient number, since it is larger than the sum of its proper divisors (47774481).

143323431 is an equidigital number, since it uses as much as digits as its factorization.

143323431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47774480.

The product of its digits is 2592, while the sum is 24.

The square root of 143323431 is about 11971.7764345982. The cubic root of 143323431 is about 523.3261044976.

Adding to 143323431 its reverse (134323341), we get a palindrome (277646772).

The spelling of 143323431 in words is "one hundred forty-three million, three hundred twenty-three thousand, four hundred thirty-one".