1138312 has 16 divisors (see below), whose sum is σ = 2439360. Its totient is φ = 487824.

The previous prime is 1138273. The next prime is 1138363. The reversal of 1138312 is 2138311.

It is a self number, because there is not a number n which added to its sum of digits gives 1138312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10108 + ... + 10219.

It is an arithmetic number, because the mean of its divisors is an integer number (152460).

2^1138312 is an apocalyptic number.

It is an amenable number.

1138312 is an abundant number, since it is smaller than the sum of its proper divisors (1301048).

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

1138312 is a wasteful number, since it uses less digits than its factorization.

1138312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20340 (or 20336 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 1138312 is about 1066.9170539456. The cubic root of 1138312 is about 104.4128070097.

Subtracting 1138312 from its reverse (2138311), we obtain a palindrome (999999).

The spelling of 1138312 in words is "one million, one hundred thirty-eight thousand, three hundred twelve".