1023312 has 20 divisors (see below), whose sum is σ = 2643680. Its totient is φ = 341088.

The previous prime is 1023311. The next prime is 1023313. The reversal of 1023312 is 2133201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1023311) and next prime (1023313).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023311) by changing a digit.

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, 10612 + ... + 10707.

It is an arithmetic number, because the mean of its divisors is an integer number (132184).

2^1023312 is an apocalyptic number.

1023312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1023312 is an abundant number, since it is smaller than the sum of its proper divisors (1620368).

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

1023312 is a wasteful number, since it uses less digits than its factorization.

1023312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21330 (or 21324 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1023312 is about 1011.5888492861. The cubic root of 1023312 is about 100.7711053487.

Adding to 1023312 its reverse (2133201), we get a palindrome (3156513).

The spelling of 1023312 in words is "one million, twenty-three thousand, three hundred twelve".