1116542131 has 2 divisors, whose sum is σ = 1116542132. Its totient is φ = 1116542130.

The previous prime is 1116542129. The next prime is 1116542179. The reversal of 1116542131 is 1312456111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1116542131 - 2¹ = 1116542129 is a prime.

It is a super-2 number, since 2×1116542131² = 2493332660596042322, which contains 22 as substring.

Together with 1116542129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1116542096 and 1116542105.

It is not a weakly prime, because it can be changed into another prime (1116542101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558271065 + 558271066.

It is an arithmetic number, because the mean of its divisors is an integer number (558271066).

Almost surely, 2^1116542131 is an apocalyptic number.

1116542131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116542131 is an equidigital number, since it uses as much as digits as its factorization.

1116542131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 25.

The square root of 1116542131 is about 33414.6993252969. The cubic root of 1116542131 is about 1037.4289707216.

Adding to 1116542131 its reverse (1312456111), we get a palindrome (2428998242).

The spelling of 1116542131 in words is "one billion, one hundred sixteen million, five hundred forty-two thousand, one hundred thirty-one".