1131143051 has 2 divisors, whose sum is σ = 1131143052. Its totient is φ = 1131143050.

The previous prime is 1131143033. The next prime is 1131143063. The reversal of 1131143051 is 1503411311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131143051 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131145051) 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 as a sum of consecutive naturals, namely, 565571525 + 565571526.

It is an arithmetic number, because the mean of its divisors is an integer number (565571526).

Almost surely, 2^1131143051 is an apocalyptic number.

1131143051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131143051 is an equidigital number, since it uses as much as digits as its factorization.

1131143051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1131143051 is about 33632.4701887923. The cubic root of 1131143051 is about 1041.9315223633.

Adding to 1131143051 its reverse (1503411311), we get a palindrome (2634554362).

The spelling of 1131143051 in words is "one billion, one hundred thirty-one million, one hundred forty-three thousand, fifty-one".