231522101440112 has 160 divisors (see below), whose sum is σ = 557509175879040. Its totient is φ = 90858812866560.

The previous prime is 231522101440087. The next prime is 231522101440117. The reversal of 231522101440112 is 211044101225132.

It is a super-2 number, since 2×231522101440112² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231522101440117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1789948562 + ... + 1790077902.

It is an arithmetic number, because the mean of its divisors is an integer number (3484432349244).

Almost surely, 2^{231522101440112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231522101440112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278754587939520).

231522101440112 is an abundant number, since it is smaller than the sum of its proper divisors (325987074438928).

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

231522101440112 is a wasteful number, since it uses less digits than its factorization.

231522101440112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154819 (or 154813 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 231522101440112 its reverse (211044101225132), we get a palindrome (442566202665244).

The spelling of 231522101440112 in words is "two hundred thirty-one trillion, five hundred twenty-two billion, one hundred one million, four hundred forty thousand, one hundred twelve".