1331146 has 4 divisors (see below), whose sum is σ = 1996722. Its totient is φ = 665572.

The previous prime is 1331123. The next prime is 1331153. The reversal of 1331146 is 6411331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1092025 + 239121 = 1045^2 + 489^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332785 + ... + 332788.

2^1331146 is an apocalyptic number.

1331146 is a deficient number, since it is larger than the sum of its proper divisors (665576).

1331146 is an equidigital number, since it uses as much as digits as its factorization.

1331146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665575.

The product of its digits is 216, while the sum is 19.

The square root of 1331146 is about 1153.7530064966. The cubic root of 1331146 is about 110.0040218915.

Adding to 1331146 its reverse (6411331), we get a palindrome (7742477).

The spelling of 1331146 in words is "one million, three hundred thirty-one thousand, one hundred forty-six".