1331312 has 10 divisors (see below), whose sum is σ = 2579448. Its totient is φ = 665648.

The previous prime is 1331299. The next prime is 1331327. The reversal of 1331312 is 2131331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41588 + ... + 41619.

2^1331312 is an apocalyptic number.

It is an amenable number.

1331312 is a deficient number, since it is larger than the sum of its proper divisors (1248136).

1331312 is an equidigital number, since it uses as much as digits as its factorization.

1331312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83215 (or 83209 counting only the distinct ones).

The product of its digits is 54, while the sum is 14.

The square root of 1331312 is about 1153.8249433948. The cubic root of 1331312 is about 110.0085943698.

Adding to 1331312 its reverse (2131331), we get a palindrome (3462643).

The spelling of 1331312 in words is "one million, three hundred thirty-one thousand, three hundred twelve".