243322143 has 8 divisors (see below), whose sum is σ = 325537968. Its totient is φ = 161660544.

The previous prime is 243322103. The next prime is 243322147. The reversal of 243322143 is 341223342.

243322143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 243322143 - 2¹³ = 243313951 is a prime.

It is a super-2 number, since 2×243322143² = 118411330548224898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243322147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137530 + ... + 139287.

It is an arithmetic number, because the mean of its divisors is an integer number (40692246).

Almost surely, 2^243322143 is an apocalyptic number.

243322143 is a deficient number, since it is larger than the sum of its proper divisors (82215825).

243322143 is a wasteful number, since it uses less digits than its factorization.

243322143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277113.

The product of its digits is 3456, while the sum is 24.

The square root of 243322143 is about 15598.7865874240. The cubic root of 243322143 is about 624.3007800648.

Adding to 243322143 its reverse (341223342), we get a palindrome (584545485).

The spelling of 243322143 in words is "two hundred forty-three million, three hundred twenty-two thousand, one hundred forty-three".