112889281 has 2 divisors, whose sum is σ = 112889282. Its totient is φ = 112889280.

The previous prime is 112889263. The next prime is 112889297. The reversal of 112889281 is 182988211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101606400 + 11282881 = 10080^2 + 3359^2 .

It is a cyclic number.

It is not a de Polignac number, because 112889281 - 2¹³ = 112881089 is a prime.

It is a super-2 number, since 2×112889281² = 25487979529393922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (112889201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56444640 + 56444641.

It is an arithmetic number, because the mean of its divisors is an integer number (56444641).

Almost surely, 2^112889281 is an apocalyptic number.

It is an amenable number.

112889281 is a deficient number, since it is larger than the sum of its proper divisors (1).

112889281 is an equidigital number, since it uses as much as digits as its factorization.

112889281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 40.

The square root of 112889281 is about 10624.9367527529. The cubic root of 112889281 is about 483.3008611822.

It can be divided in two parts, 1128 and 89281, that added together give a palindrome (90409).

The spelling of 112889281 in words is "one hundred twelve million, eight hundred eighty-nine thousand, two hundred eighty-one".