1231100332 has 96 divisors (see below), whose sum is σ = 2750146560. Its totient is φ = 468357120.

The previous prime is 1231100327. The next prime is 1231100333. The reversal of 1231100332 is 2330011321.

It is not an unprimeable number, because it can be changed into a prime (1231100333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2658733 + ... + 2659195.

It is an arithmetic number, because the mean of its divisors is an integer number (28647360).

Almost surely, 2^1231100332 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 1231100332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375073280).

1231100332 is an abundant number, since it is smaller than the sum of its proper divisors (1519046228).

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

1231100332 is a wasteful number, since it uses less digits than its factorization.

1231100332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1231100332 is about 35087.0393735351. The cubic root of 1231100332 is about 1071.7606707037.

Adding to 1231100332 its reverse (2330011321), we get a palindrome (3561111653).

The spelling of 1231100332 in words is "one billion, two hundred thirty-one million, one hundred thousand, three hundred thirty-two".