1280531171 has 8 divisors (see below), whose sum is σ = 1356315840. Its totient is φ = 1204797568.

The previous prime is 1280531129. The next prime is 1280531173. The reversal of 1280531171 is 1711350821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1280531171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1280531173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46865 + ... + 68973.

It is an arithmetic number, because the mean of its divisors is an integer number (169539480).

Almost surely, 2^1280531171 is an apocalyptic number.

1280531171 is a deficient number, since it is larger than the sum of its proper divisors (75784669).

1280531171 is a wasteful number, since it uses less digits than its factorization.

1280531171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25533.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 1280531171 is about 35784.5102104248. The cubic root of 1280531171 is about 1085.9172154426.

Adding to 1280531171 its reverse (1711350821), we get a palindrome (2991881992).

The spelling of 1280531171 in words is "one billion, two hundred eighty million, five hundred thirty-one thousand, one hundred seventy-one".