11323031132 has 72 divisors (see below), whose sum is σ = 23840409600. Its totient is φ = 4689056736.

The previous prime is 11323031117. The next prime is 11323031149. The reversal of 11323031132 is 23113032311.

It is a super-2 number, since 2×11323031132² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 719969 + ... + 735527.

It is an arithmetic number, because the mean of its divisors is an integer number (331116800).

Almost surely, 2^11323031132 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 11323031132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11920204800).

11323031132 is an abundant number, since it is smaller than the sum of its proper divisors (12517378468).

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

11323031132 is a wasteful number, since it uses less digits than its factorization.

11323031132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15703 (or 15694 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 11323031132 its reverse (23113032311), we get a palindrome (34436063443).

The spelling of 11323031132 in words is "eleven billion, three hundred twenty-three million, thirty-one thousand, one hundred thirty-two".