1232321032520 has 32 divisors (see below), whose sum is σ = 2783029865400. Its totient is φ = 491095961088.

The previous prime is 1232321032513. The next prime is 1232321032529. The reversal of 1232321032520 is 252301232321.

It can be written as a sum of positive squares in 4 ways, for example, as 729920757316 + 502400275204 = 854354^2 + 708802^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1232321032520.

It is not an unprimeable number, because it can be changed into a prime (1232321032529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57253229 + ... + 57274748.

Almost surely, 2^{1232321032520} is an apocalyptic number.

1232321032520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232321032520 is an abundant number, since it is smaller than the sum of its proper divisors (1550708832880).

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

1232321032520 is a wasteful number, since it uses less digits than its factorization.

1232321032520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114528257 (or 114528253 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 1232321032520 its reverse (252301232321), we get a palindrome (1484622264841).

The spelling of 1232321032520 in words is "one trillion, two hundred thirty-two billion, three hundred twenty-one million, thirty-two thousand, five hundred twenty".