1312267284 has 48 divisors (see below), whose sum is σ = 3519499200. Its totient is φ = 422337888.

The previous prime is 1312267261. The next prime is 1312267289. The reversal of 1312267284 is 4827622131.

It is a happy number.

1312267284 is a `hidden beast` number, since 1 + 312 + 2 + 67 + 284 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312267289) 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, 206362 + ... + 212625.

It is an arithmetic number, because the mean of its divisors is an integer number (73322900).

Almost surely, 2^1312267284 is an apocalyptic number.

It is an amenable number.

1312267284 is an abundant number, since it is smaller than the sum of its proper divisors (2207231916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312267284 is a wasteful number, since it uses less digits than its factorization.

1312267284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419029 (or 419021 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 1312267284 is about 36225.2299371584. The cubic root of 1312267284 is about 1094.8150710406.

The spelling of 1312267284 in words is "one billion, three hundred twelve million, two hundred sixty-seven thousand, two hundred eighty-four".