243442143231 has 16 divisors (see below), whose sum is σ = 370966362624. Its totient is φ = 139107206304.

The previous prime is 243442143221. The next prime is 243442143317. The reversal of 243442143231 is 132341244342.

It is not a de Polignac number, because 243442143231 - 2¹⁷ = 243442012159 is a prime.

It is a super-2 number, since 2×243442143231² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243442143192 and 243442143201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243442143211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2056990 + ... + 2172116.

It is an arithmetic number, because the mean of its divisors is an integer number (23185397664).

Almost surely, 2^243442143231 is an apocalyptic number.

243442143231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

243442143231 is a deficient number, since it is larger than the sum of its proper divisors (127524219393).

243442143231 is a wasteful number, since it uses less digits than its factorization.

243442143231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215830.

The product of its digits is 55296, while the sum is 33.

Adding to 243442143231 its reverse (132341244342), we get a palindrome (375783387573).

The spelling of 243442143231 in words is "two hundred forty-three billion, four hundred forty-two million, one hundred forty-three thousand, two hundred thirty-one".