243432143 has 4 divisors (see below), whose sum is σ = 243597120. Its totient is φ = 243267168.

The previous prime is 243432121. The next prime is 243432173. The reversal of 243432143 is 341234342.

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 243432143 - 2¹⁴ = 243415759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243432103) 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, 80255 + ... + 83232.

It is an arithmetic number, because the mean of its divisors is an integer number (60899280).

Almost surely, 2^243432143 is an apocalyptic number.

243432143 is a deficient number, since it is larger than the sum of its proper divisors (164977).

243432143 is a wasteful number, since it uses less digits than its factorization.

243432143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164976.

The product of its digits is 6912, while the sum is 26.

The square root of 243432143 is about 15602.3121043004. The cubic root of 243432143 is about 624.3948429383.

Adding to 243432143 its reverse (341234342), we get a palindrome (584666485).

The spelling of 243432143 in words is "two hundred forty-three million, four hundred thirty-two thousand, one hundred forty-three".