1280873331 has 20 divisors (see below), whose sum is σ = 1921056984. Its totient is φ = 850513500.

The previous prime is 1280873317. The next prime is 1280873387. The reversal of 1280873331 is 1333780821.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an ABA number since it can be written as A⋅B^A, here for A=3, B=753.

It is not a de Polignac number, because 1280873331 - 2¹³ = 1280865139 is a prime.

It is a super-2 number, since 2×1280873331² = 3281272980134071122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1280173331) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5102956 + ... + 5103206.

Almost surely, 2^1280873331 is an apocalyptic number.

1280873331 is a deficient number, since it is larger than the sum of its proper divisors (640183653).

1280873331 is an frugal number, since it uses more digits than its factorization.

1280873331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1280873331 is about 35789.2907306082. The cubic root of 1280873331 is about 1086.0139264415.

The spelling of 1280873331 in words is "one billion, two hundred eighty million, eight hundred seventy-three thousand, three hundred thirty-one".