243320023143 has 40 divisors (see below), whose sum is σ = 387351410688. Its totient is φ = 151859250576.

The previous prime is 243320023139. The next prime is 243320023153. The reversal of 243320023143 is 341320023342.

243320023143 is a `hidden beast` number, since 2 + 433 + 200 + 23 + 1 + 4 + 3 = 666.

It is not a de Polignac number, because 243320023143 - 2² = 243320023139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243320023153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1301871 + ... + 1476992.

Almost surely, 2^243320023143 is an apocalyptic number.

243320023143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

243320023143 is a deficient number, since it is larger than the sum of its proper divisors (144031387545).

243320023143 is a wasteful number, since it uses less digits than its factorization.

243320023143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778945 (or 2778936 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 243320023143 its reverse (341320023342), we get a palindrome (584640046485).

The spelling of 243320023143 in words is "two hundred forty-three billion, three hundred twenty million, twenty-three thousand, one hundred forty-three".