231143132242 has 8 divisors (see below), whose sum is σ = 378234216432. Its totient is φ = 105065060100.

The previous prime is 231143132239. The next prime is 231143132251. The reversal of 231143132242 is 242231341132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 231143132242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5253252984 + ... + 5253253027.

It is an arithmetic number, because the mean of its divisors is an integer number (47279277054).

Almost surely, 2^231143132242 is an apocalyptic number.

231143132242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231143132242 is a deficient number, since it is larger than the sum of its proper divisors (147091084190).

231143132242 is a wasteful number, since it uses less digits than its factorization.

231143132242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10506506024.

The product of its digits is 6912, while the sum is 28.

Adding to 231143132242 its reverse (242231341132), we get a palindrome (473374473374).

The spelling of 231143132242 in words is "two hundred thirty-one billion, one hundred forty-three million, one hundred thirty-two thousand, two hundred forty-two".