231522415542042 has 32 divisors (see below), whose sum is σ = 472063373924352. Its totient is φ = 75681378560304.

The previous prime is 231522415541999. The next prime is 231522415542043. The reversal of 231522415542042 is 240245514225132.

It is a junction number, because it is equal to n+sod(n) for n = 231522415541985 and 231522415542003.

It is not an unprimeable number, because it can be changed into a prime (231522415542043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1291225168 + ... + 1291404459.

It is an arithmetic number, because the mean of its divisors is an integer number (14751980435136).

Almost surely, 2^{231522415542042} is an apocalyptic number.

231522415542042 is an abundant number, since it is smaller than the sum of its proper divisors (240540958382310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231522415542042 is a wasteful number, since it uses less digits than its factorization.

231522415542042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582629922.

The product of its (nonzero) digits is 768000, while the sum is 42.

Adding to 231522415542042 its reverse (240245514225132), we get a palindrome (471767929767174).

The spelling of 231522415542042 in words is "two hundred thirty-one trillion, five hundred twenty-two billion, four hundred fifteen million, five hundred forty-two thousand, forty-two".