1113312123031 has 4 divisors (see below), whose sum is σ = 1113314978952. Its totient is φ = 1113309267112.

The previous prime is 1113312123019. The next prime is 1113312123041. The reversal of 1113312123031 is 1303212133111.

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

It is a cyclic number.

It is not a de Polignac number, because 1113312123031 - 2¹⁵ = 1113312090263 is a prime.

It is a super-2 number, since 2×1113312123031² (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 = 1113312122993 and 1113312123011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113312123041) 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, 729265 + ... + 1660858.

It is an arithmetic number, because the mean of its divisors is an integer number (278328744738).

Almost surely, 2^{1113312123031} is an apocalyptic number.

1113312123031 is a deficient number, since it is larger than the sum of its proper divisors (2855921).

1113312123031 is an equidigital number, since it uses as much as digits as its factorization.

1113312123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855920.

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

Adding to 1113312123031 its reverse (1303212133111), we get a palindrome (2416524256142).

The spelling of 1113312123031 in words is "one trillion, one hundred thirteen billion, three hundred twelve million, one hundred twenty-three thousand, thirty-one".