1203312 has 80 divisors (see below), whose sum is σ = 3535488. Its totient is φ = 349440.

The previous prime is 1203287. The next prime is 1203329. The reversal of 1203312 is 2133021.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22678 + ... + 22730.

2^1203312 is an apocalyptic number.

1203312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1203312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1767744).

1203312 is an abundant number, since it is smaller than the sum of its proper divisors (2332176).

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

1203312 is a wasteful number, since it uses less digits than its factorization.

1203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 112 counting only the distinct ones).

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

The square root of 1203312 is about 1096.9557876232. The cubic root of 1203312 is about 106.3635317009.

Adding to 1203312 its reverse (2133021), we get a palindrome (3336333).

The spelling of 1203312 in words is "one million, two hundred three thousand, three hundred twelve".