1031232321012 has 24 divisors (see below), whose sum is σ = 2451608915616. Its totient is φ = 337258368928.

The previous prime is 1031232320981. The next prime is 1031232321013. The reversal of 1031232321012 is 2101232321301.

It is a self number, because there is not a number n which added to its sum of digits gives 1031232321012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031232321013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810716598 + ... + 810717869.

It is an arithmetic number, because the mean of its divisors is an integer number (102150371484).

Almost surely, 2^{1031232321012} is an apocalyptic number.

1031232321012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1031232321012 is an abundant number, since it is smaller than the sum of its proper divisors (1420376594604).

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

1031232321012 is a wasteful number, since it uses less digits than its factorization.

1031232321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621434527 (or 1621434525 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1031232321012 its reverse (2101232321301), we get a palindrome (3132464642313).

The spelling of 1031232321012 in words is "one trillion, thirty-one billion, two hundred thirty-two million, three hundred twenty-one thousand, twelve".