1131207587 has 2 divisors, whose sum is σ = 1131207588. Its totient is φ = 1131207586.

The previous prime is 1131207569. The next prime is 1131207613. The reversal of 1131207587 is 7857021311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131207587 - 2⁸ = 1131207331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131203587) 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, 565603793 + 565603794.

It is an arithmetic number, because the mean of its divisors is an integer number (565603794).

Almost surely, 2^1131207587 is an apocalyptic number.

1131207587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131207587 is an equidigital number, since it uses as much as digits as its factorization.

1131207587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 1131207587 is about 33633.4296050819. The cubic root of 1131207587 is about 1041.9513373678.

Adding to 1131207587 its reverse (7857021311), we get a palindrome (8988228898).

The spelling of 1131207587 in words is "one billion, one hundred thirty-one million, two hundred seven thousand, five hundred eighty-seven".