1112143987 has 2 divisors, whose sum is σ = 1112143988. Its totient is φ = 1112143986.

The previous prime is 1112143973. The next prime is 1112144017. The reversal of 1112143987 is 7893412111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1112143987 - 2¹¹ = 1112141939 is a prime.

It is not a weakly prime, because it can be changed into another prime (1112143957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556071993 + 556071994.

It is an arithmetic number, because the mean of its divisors is an integer number (556071994).

Almost surely, 2^1112143987 is an apocalyptic number.

1112143987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112143987 is an equidigital number, since it uses as much as digits as its factorization.

1112143987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 37.

The square root of 1112143987 is about 33348.8228727792. The cubic root of 1112143987 is about 1036.0650078094.

The spelling of 1112143987 in words is "one billion, one hundred twelve million, one hundred forty-three thousand, nine hundred eighty-seven".