1113543131 has 4 divisors (see below), whose sum is σ = 1151941200. Its totient is φ = 1075145064.

The previous prime is 1113543121. The next prime is 1113543161. The reversal of 1113543131 is 1313453111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1313453111 = 23 ⋅57106657.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1113543131 is a prime.

It is a super-2 number, since 2×1113543131² = 2479956609194566322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113543097 and 1113543106.

It is not an unprimeable number, because it can be changed into a prime (1113543121) 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 3 ways as a sum of consecutive naturals, for example, 19198991 + ... + 19199048.

It is an arithmetic number, because the mean of its divisors is an integer number (287985300).

Almost surely, 2^1113543131 is an apocalyptic number.

1113543131 is a deficient number, since it is larger than the sum of its proper divisors (38398069).

1113543131 is an equidigital number, since it uses as much as digits as its factorization.

1113543131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38398068.

The product of its digits is 540, while the sum is 23.

The square root of 1113543131 is about 33369.7936913011. The cubic root of 1113543131 is about 1036.4993030938.

Adding to 1113543131 its reverse (1313453111), we get a palindrome (2426996242).

The spelling of 1113543131 in words is "one billion, one hundred thirteen million, five hundred forty-three thousand, one hundred thirty-one".