1283278211 has 4 divisors (see below), whose sum is σ = 1301352624. Its totient is φ = 1265203800.

The previous prime is 1283278153. The next prime is 1283278223. The reversal of 1283278211 is 1128723821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1128723821 = 199 ⋅5671979.

It is a cyclic number.

It is not a de Polignac number, because 1283278211 - 2¹⁰ = 1283277187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1283278811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9037100 + ... + 9037241.

It is an arithmetic number, because the mean of its divisors is an integer number (325338156).

Almost surely, 2^1283278211 is an apocalyptic number.

1283278211 is a deficient number, since it is larger than the sum of its proper divisors (18074413).

1283278211 is an equidigital number, since it uses as much as digits as its factorization.

1283278211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18074412.

The product of its digits is 10752, while the sum is 35.

The square root of 1283278211 is about 35822.8727351674. The cubic root of 1283278211 is about 1086.6931766254.

The spelling of 1283278211 in words is "one billion, two hundred eighty-three million, two hundred seventy-eight thousand, two hundred eleven".