243131144012427 has 32 divisors (see below), whose sum is σ = 374609995651584. Its totient is φ = 138624420211200.

The previous prime is 243131144012389. The next prime is 243131144012443. The reversal of 243131144012427 is 724210441131342.

It is not a de Polignac number, because 243131144012427 - 2⁶ = 243131144012363 is a prime.

It is a super-2 number, since 2×243131144012427² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243131144012227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92470048 + ... + 95062989.

It is an arithmetic number, because the mean of its divisors is an integer number (11706562364112).

Almost surely, 2^{243131144012427} is an apocalyptic number.

243131144012427 is a deficient number, since it is larger than the sum of its proper divisors (131478851639157).

243131144012427 is a wasteful number, since it uses less digits than its factorization.

243131144012427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187535379.

The product of its (nonzero) digits is 129024, while the sum is 39.

Adding to 243131144012427 its reverse (724210441131342), we get a palindrome (967341585143769).

The spelling of 243131144012427 in words is "two hundred forty-three trillion, one hundred thirty-one billion, one hundred forty-four million, twelve thousand, four hundred twenty-seven".