1131419987 has 2 divisors, whose sum is σ = 1131419988. Its totient is φ = 1131419986.

The previous prime is 1131419981. The next prime is 1131420041. The reversal of 1131419987 is 7899141311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131419987 - 2²⁶ = 1064311123 is a prime.

It is a super-2 number, since 2×1131419987² = 2560222373966160338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1131419981) 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, 565709993 + 565709994.

It is an arithmetic number, because the mean of its divisors is an integer number (565709994).

Almost surely, 2^1131419987 is an apocalyptic number.

1131419987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131419987 is an equidigital number, since it uses as much as digits as its factorization.

1131419987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 44.

The square root of 1131419987 is about 33636.5870296022. The cubic root of 1131419987 is about 1042.0165469181.

The spelling of 1131419987 in words is "one billion, one hundred thirty-one million, four hundred nineteen thousand, nine hundred eighty-seven".