1231330232 has 64 divisors (see below), whose sum is σ = 2562658560. Its totient is φ = 549990400.

The previous prime is 1231330187. The next prime is 1231330267. The reversal of 1231330232 is 2320331321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1920632 + ... + 1921272.

It is an arithmetic number, because the mean of its divisors is an integer number (40041540).

Almost surely, 2^1231330232 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 1231330232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1281329280).

1231330232 is an abundant number, since it is smaller than the sum of its proper divisors (1331328328).

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

1231330232 is a wasteful number, since it uses less digits than its factorization.

1231330232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1231330232 is about 35090.3153590845. The cubic root of 1231330232 is about 1071.8273813353.

Adding to 1231330232 its reverse (2320331321), we get a palindrome (3551661553).

The spelling of 1231330232 in words is "one billion, two hundred thirty-one million, three hundred thirty thousand, two hundred thirty-two".