1231332304 has 40 divisors (see below), whose sum is σ = 2537013960. Its totient is φ = 576933888.

The previous prime is 1231332281. The next prime is 1231332337. The reversal of 1231332304 is 4032331321.

It can be written as a sum of positive squares in 4 ways, for example, as 725904 + 1230606400 = 852^2 + 35080^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 53662 + ... + 73090.

It is an arithmetic number, because the mean of its divisors is an integer number (63425349).

Almost surely, 2^1231332304 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 1231332304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1268506980).

1231332304 is an abundant number, since it is smaller than the sum of its proper divisors (1305681656).

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

1231332304 is a wasteful number, since it uses less digits than its factorization.

1231332304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19687 (or 19681 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 1231332304 is about 35090.3448828877. The cubic root of 1231332304 is about 1071.8279825347.

Adding to 1231332304 its reverse (4032331321), we get a palindrome (5263663625).

The spelling of 1231332304 in words is "one billion, two hundred thirty-one million, three hundred thirty-two thousand, three hundred four".