1031312 has 20 divisors (see below), whose sum is σ = 2046000. Its totient is φ = 503328.

The previous prime is 1031309. The next prime is 1031323. The reversal of 1031312 is 2131301.

It is a junction number, because it is equal to n+sod(n) for n = 1031293 and 1031302.

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 in 3 ways as a sum of consecutive naturals, for example, 62 + ... + 1437.

It is an arithmetic number, because the mean of its divisors is an integer number (102300).

2^1031312 is an apocalyptic number.

It is an amenable number.

1031312 is a deficient number, since it is larger than the sum of its proper divisors (1014688).

1031312 is a wasteful number, since it uses less digits than its factorization.

1031312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 1544 counting only the distinct ones).

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

The square root of 1031312 is about 1015.5353268104. The cubic root of 1031312 is about 101.0330251771.

Subtracting from 1031312 its sum of digits (11), we obtain a palindrome (1031301).

Adding to 1031312 its reverse (2131301), we get a palindrome (3162613).

The spelling of 1031312 in words is "one million, thirty-one thousand, three hundred twelve".