1231231232 has 108 divisors (see below), whose sum is σ = 3119152176. Its totient is φ = 479646720.

The previous prime is 1231231207. The next prime is 1231231237. The reversal of 1231231232 is 2321321321.

It is not an unprimeable number, because it can be changed into a prime (1231231237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133523 + ... + 142445.

Almost surely, 2^1231231232 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 1231231232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559576088).

1231231232 is an abundant number, since it is smaller than the sum of its proper divisors (1887920944).

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

1231231232 is an equidigital number, since it uses as much as digits as its factorization.

1231231232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8964 (or 8943 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 1231231232 is about 35088.9046850995. The cubic root of 1231231232 is about 1071.7986552871.

Adding to 1231231232 its reverse (2321321321), we get a palindrome (3552552553).

The spelling of 1231231232 in words is "one billion, two hundred thirty-one million, two hundred thirty-one thousand, two hundred thirty-two".