1281000171 has 16 divisors (see below), whose sum is σ = 1885726080. Its totient is φ = 767008320.

The previous prime is 1281000163. The next prime is 1281000179. The reversal of 1281000171 is 1710001821.

It is an interprime number because it is at equal distance from previous prime (1281000163) and next prime (1281000179).

It is not a de Polignac number, because 1281000171 - 2³ = 1281000163 is a prime.

It is a super-2 number, since 2×1281000171² = 3281922876204058482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1281000179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231106 + ... + 236583.

It is an arithmetic number, because the mean of its divisors is an integer number (117857880).

Almost surely, 2^1281000171 is an apocalyptic number.

1281000171 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1281000171 is a deficient number, since it is larger than the sum of its proper divisors (604725909).

1281000171 is a wasteful number, since it uses less digits than its factorization.

1281000171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467786.

The product of its (nonzero) digits is 112, while the sum is 21.

The square root of 1281000171 is about 35791.0627252112. The cubic root of 1281000171 is about 1086.0497731971.

Adding to 1281000171 its reverse (1710001821), we get a palindrome (2991001992).

The spelling of 1281000171 in words is "one billion, two hundred eighty-one million, one hundred seventy-one", and thus it is an aban number.