1113203131321 has 8 divisors (see below), whose sum is σ = 1132531029000. Its totient is φ = 1093910029440.

The previous prime is 1113203131309. The next prime is 1113203131373. The reversal of 1113203131321 is 1231313023111.

It can be written as a sum of positive squares in 4 ways, for example, as 335171523600 + 778031607721 = 578940^2 + 882061^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1113203131321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113203131292 and 1113203131301.

It is not an unprimeable number, because it can be changed into a prime (1113203131721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8634406 + ... + 8762383.

It is an arithmetic number, because the mean of its divisors is an integer number (141566378625).

Almost surely, 2^{1113203131321} is an apocalyptic number.

It is an amenable number.

1113203131321 is a deficient number, since it is larger than the sum of its proper divisors (19327897679).

1113203131321 is a wasteful number, since it uses less digits than its factorization.

1113203131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17397899.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1113203131321 its reverse (1231313023111), we get a palindrome (2344516154432).

The spelling of 1113203131321 in words is "one trillion, one hundred thirteen billion, two hundred three million, one hundred thirty-one thousand, three hundred twenty-one".