1013113232321 has 4 divisors (see below), whose sum is σ = 1013501549700. Its totient is φ = 1012724914944.

The previous prime is 1013113232309. The next prime is 1013113232347. The reversal of 1013113232321 is 1232323113101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 648731982721 + 364381249600 = 805439^2 + 603640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013113232321 - 2¹⁴ = 1013113215937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013113232921) 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 3 ways as a sum of consecutive naturals, for example, 194154776 + ... + 194159993.

It is an arithmetic number, because the mean of its divisors is an integer number (253375387425).

Almost surely, 2^{1013113232321} is an apocalyptic number.

It is an amenable number.

1013113232321 is a deficient number, since it is larger than the sum of its proper divisors (388317379).

1013113232321 is an equidigital number, since it uses as much as digits as its factorization.

1013113232321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388317378.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1013113232321 its reverse (1232323113101), we get a palindrome (2245436345422).

The spelling of 1013113232321 in words is "one trillion, thirteen billion, one hundred thirteen million, two hundred thirty-two thousand, three hundred twenty-one".