1131243067 has 2 divisors, whose sum is σ = 1131243068. Its totient is φ = 1131243066.

The previous prime is 1131243037. The next prime is 1131243083. The reversal of 1131243067 is 7603421311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131243067 - 2¹⁵ = 1131210299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131243037) 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 as a sum of consecutive naturals, namely, 565621533 + 565621534.

It is an arithmetic number, because the mean of its divisors is an integer number (565621534).

Almost surely, 2^1131243067 is an apocalyptic number.

1131243067 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131243067 is an equidigital number, since it uses as much as digits as its factorization.

1131243067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1131243067 is about 33633.9570523600. The cubic root of 1131243067 is about 1041.9622307551.

Adding to 1131243067 its reverse (7603421311), we get a palindrome (8734664378).

The spelling of 1131243067 in words is "one billion, one hundred thirty-one million, two hundred forty-three thousand, sixty-seven".