231123235055136 has 48 divisors (see below), whose sum is σ = 642386638613664. Its totient is φ = 72509250212864.

The previous prime is 231123235055081. The next prime is 231123235055177. The reversal of 231123235055136 is 631550532321132.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70809813030 + ... + 70809816293.

It is an arithmetic number, because the mean of its divisors is an integer number (13383054971118).

Almost surely, 2^{231123235055136} is an apocalyptic number.

It is an amenable number.

231123235055136 is an abundant number, since it is smaller than the sum of its proper divisors (411263403558528).

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

231123235055136 is a wasteful number, since it uses less digits than its factorization.

231123235055136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141619629353 (or 141619629345 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 42.

Adding to 231123235055136 its reverse (631550532321132), we get a palindrome (862673767376268).

The spelling of 231123235055136 in words is "two hundred thirty-one trillion, one hundred twenty-three billion, two hundred thirty-five million, fifty-five thousand, one hundred thirty-six".