1112981971 has 2 divisors, whose sum is σ = 1112981972. Its totient is φ = 1112981970.

The previous prime is 1112981951. The next prime is 1112981999. The reversal of 1112981971 is 1791892111.

It is a weak prime.

It is an emirp because it is prime and its reverse (1791892111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1112981971 - 2⁵ = 1112981939 is a prime.

It is not a weakly prime, because it can be changed into another prime (1112981951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556490985 + 556490986.

It is an arithmetic number, because the mean of its divisors is an integer number (556490986).

Almost surely, 2^1112981971 is an apocalyptic number.

1112981971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112981971 is an equidigital number, since it uses as much as digits as its factorization.

1112981971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 40.

The square root of 1112981971 is about 33361.3844287074. The cubic root of 1112981971 is about 1036.3251623519.

The spelling of 1112981971 in words is "one billion, one hundred twelve million, nine hundred eighty-one thousand, nine hundred seventy-one".