1331012 has 12 divisors (see below), whose sum is σ = 2339820. Its totient is φ = 662496.

The previous prime is 1330997. The next prime is 1331023. The reversal of 1331012 is 2101331.

It can be written as a sum of positive squares in 2 ways, for example, as 495616 + 835396 = 704^2 + 914^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1330984 and 1331002.

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, 458 + ... + 1694.

It is an arithmetic number, because the mean of its divisors is an integer number (194985).

2^1331012 is an apocalyptic number.

It is an amenable number.

1331012 is a deficient number, since it is larger than the sum of its proper divisors (1008808).

1331012 is a wasteful number, since it uses less digits than its factorization.

1331012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510 (or 1508 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1331012 is about 1153.6949336805. The cubic root of 1331012 is about 110.0003305775. Note that the first 3 decimals are identical.

Adding to 1331012 its reverse (2101331), we get a palindrome (3432343).

The spelling of 1331012 in words is "one million, three hundred thirty-one thousand, twelve".