2231243242536 has 128 divisors (see below), whose sum is σ = 6967241487360. Its totient is φ = 578483942400.

The previous prime is 2231243242507. The next prime is 2231243242537. The reversal of 2231243242536 is 6352423421322.

It is a super-3 number, since 3×2231243242536³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2231243242494 and 2231243242503.

It is not an unprimeable number, because it can be changed into a prime (2231243242537) 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, 92785 + ... + 2114496.

It is an arithmetic number, because the mean of its divisors is an integer number (54431574120).

Almost surely, 2^{2231243242536} 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 2231243242536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3483620743680).

2231243242536 is an abundant number, since it is smaller than the sum of its proper divisors (4735998244824).

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

2231243242536 is a wasteful number, since it uses less digits than its factorization.

2231243242536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207855 (or 2207851 counting only the distinct ones).

The product of its digits is 414720, while the sum is 39.

Adding to 2231243242536 its reverse (6352423421322), we get a palindrome (8583666663858).

The spelling of 2231243242536 in words is "two trillion, two hundred thirty-one billion, two hundred forty-three million, two hundred forty-two thousand, five hundred thirty-six".