1131042587 has 2 divisors, whose sum is σ = 1131042588. Its totient is φ = 1131042586.

The previous prime is 1131042571. The next prime is 1131042607. The reversal of 1131042587 is 7852401311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131042587 - 2⁴ = 1131042571 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131062587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565521293 + 565521294.

It is an arithmetic number, because the mean of its divisors is an integer number (565521294).

Almost surely, 2^1131042587 is an apocalyptic number.

1131042587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131042587 is an equidigital number, since it uses as much as digits as its factorization.

1131042587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1131042587 is about 33630.9765989630. The cubic root of 1131042587 is about 1041.9006745976.

Adding to 1131042587 its reverse (7852401311), we get a palindrome (8983443898).

The spelling of 1131042587 in words is "one billion, one hundred thirty-one million, forty-two thousand, five hundred eighty-seven".