243143050305431 has 4 divisors (see below), whose sum is σ = 250986374508864. Its totient is φ = 235299726102000.

The previous prime is 243143050305427. The next prime is 243143050305433. The reversal of 243143050305431 is 134503050341342.

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 243143050305431 - 2² = 243143050305427 is a prime.

It is a super-2 number, since 2×243143050305431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243143050305433) 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, 3921662101670 + ... + 3921662101731.

It is an arithmetic number, because the mean of its divisors is an integer number (62746593627216).

Almost surely, 2^{243143050305431} is an apocalyptic number.

243143050305431 is a deficient number, since it is larger than the sum of its proper divisors (7843324203433).

243143050305431 is an equidigital number, since it uses as much as digits as its factorization.

243143050305431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7843324203432.

The product of its (nonzero) digits is 259200, while the sum is 38.

The spelling of 243143050305431 in words is "two hundred forty-three trillion, one hundred forty-three billion, fifty million, three hundred five thousand, four hundred thirty-one".