231521442130101 has 16 divisors (see below), whose sum is σ = 324942698995200. Its totient is φ = 146223922879728.

The previous prime is 231521442130061. The next prime is 231521442130127. The reversal of 231521442130101 is 101031244125132.

It is a de Polignac number, because none of the positive numbers 2^k-231521442130101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231521442130501) 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, 102830320 + ... + 105057686.

It is an arithmetic number, because the mean of its divisors is an integer number (20308918687200).

Almost surely, 2^{231521442130101} is an apocalyptic number.

It is an amenable number.

231521442130101 is a deficient number, since it is larger than the sum of its proper divisors (93421256865099).

231521442130101 is a wasteful number, since it uses less digits than its factorization.

231521442130101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4050968.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 231521442130101 its reverse (101031244125132), we get a palindrome (332552686255233).

The spelling of 231521442130101 in words is "two hundred thirty-one trillion, five hundred twenty-one billion, four hundred forty-two million, one hundred thirty thousand, one hundred one".