231330243040042 has 4 divisors (see below), whose sum is σ = 346995364560066. Its totient is φ = 115665121520020.

The previous prime is 231330243040031. The next prime is 231330243040051. The reversal of 231330243040042 is 240040342033132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 124547140084761 + 106783102955281 = 11160069^2 + 10333591^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231330243039986 and 231330243040013.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 57832560760009 + ... + 57832560760012.

Almost surely, 2^{231330243040042} is an apocalyptic number.

231330243040042 is a deficient number, since it is larger than the sum of its proper divisors (115665121520024).

231330243040042 is a wasteful number, since it uses less digits than its factorization.

231330243040042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115665121520023.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 231330243040042 its reverse (240040342033132), we get a palindrome (471370585073174).

The spelling of 231330243040042 in words is "two hundred thirty-one trillion, three hundred thirty billion, two hundred forty-three million, forty thousand, forty-two".