1113312203231 has 12 divisors (see below), whose sum is σ = 1147464289440. Its totient is φ = 1080032965440.

The previous prime is 1113312203221. The next prime is 1113312203251. The reversal of 1113312203231 is 1323022133111.

It is a de Polignac number, because none of the positive numbers 2^k-1113312203231 is a prime.

It is a super-2 number, since 2×1113312203231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113312203197 and 1113312203206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113312203221) 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 11 ways as a sum of consecutive naturals, for example, 1976615 + ... + 2476616.

It is an arithmetic number, because the mean of its divisors is an integer number (95622024120).

Almost surely, 2^{1113312203231} is an apocalyptic number.

1113312203231 is a deficient number, since it is larger than the sum of its proper divisors (34152086209).

1113312203231 is an frugal number, since it uses more digits than its factorization.

1113312203231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453426 (or 4453373 counting only the distinct ones).

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

Adding to 1113312203231 its reverse (1323022133111), we get a palindrome (2436334336342).

The spelling of 1113312203231 in words is "one trillion, one hundred thirteen billion, three hundred twelve million, two hundred three thousand, two hundred thirty-one".