242543312231 has 4 divisors (see below), whose sum is σ = 264592704264. Its totient is φ = 220493920200.

The previous prime is 242543312227. The next prime is 242543312273. The reversal of 242543312231 is 132213345242.

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 242543312231 - 2² = 242543312227 is a prime.

It is a super-2 number, since 2×242543312231² (a number of 24 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 (242542312231) 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, 11024696000 + ... + 11024696021.

It is an arithmetic number, because the mean of its divisors is an integer number (66148176066).

Almost surely, 2^242543312231 is an apocalyptic number.

242543312231 is a deficient number, since it is larger than the sum of its proper divisors (22049392033).

242543312231 is a wasteful number, since it uses less digits than its factorization.

242543312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22049392032.

The product of its digits is 34560, while the sum is 32.

Adding to 242543312231 its reverse (132213345242), we get a palindrome (374756657473).

The spelling of 242543312231 in words is "two hundred forty-two billion, five hundred forty-three million, three hundred twelve thousand, two hundred thirty-one".