1113131023 has 4 divisors (see below), whose sum is σ = 1161528048. Its totient is φ = 1064734000.

The previous prime is 1113131009. The next prime is 1113131039. The reversal of 1113131023 is 3201313111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3201313111 = 8599 ⋅372289.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1113131023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113130988 and 1113131006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113131003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24198478 + ... + 24198523.

It is an arithmetic number, because the mean of its divisors is an integer number (290382012).

Almost surely, 2^1113131023 is an apocalyptic number.

1113131023 is a deficient number, since it is larger than the sum of its proper divisors (48397025).

1113131023 is an equidigital number, since it uses as much as digits as its factorization.

1113131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48397024.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1113131023 is about 33363.6182540204. The cubic root of 1113131023 is about 1036.3714222936.

Adding to 1113131023 its reverse (3201313111), we get a palindrome (4314444134).

The spelling of 1113131023 in words is "one billion, one hundred thirteen million, one hundred thirty-one thousand, twenty-three".