231521634060 has 48 divisors (see below), whose sum is σ = 648298736736. Its totient is φ = 61735468032.

The previous prime is 231521634053. The next prime is 231521634061. The reversal of 231521634060 is 60436125132.

It is not an unprimeable number, because it can be changed into a prime (231521634061) 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, 1005252 + ... + 1213908.

It is an arithmetic number, because the mean of its divisors is an integer number (13506223682).

Almost surely, 2^231521634060 is an apocalyptic number.

231521634060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231521634060 is an abundant number, since it is smaller than the sum of its proper divisors (416777102676).

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

231521634060 is a wasteful number, since it uses less digits than its factorization.

231521634060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227162 (or 227160 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 231521634060 its reverse (60436125132), we get a palindrome (291957759192).

The spelling of 231521634060 in words is "two hundred thirty-one billion, five hundred twenty-one million, six hundred thirty-four thousand, sixty".