1263312 has 60 divisors (see below), whose sum is σ = 3662464. Its totient is φ = 406080.

The previous prime is 1263307. The next prime is 1263319. The reversal of 1263312 is 2133621.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4323 + ... + 4605.

2^1263312 is an apocalyptic number.

1263312 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 1263312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1831232).

1263312 is an abundant number, since it is smaller than the sum of its proper divisors (2399152).

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

1263312 is a wasteful number, since it uses less digits than its factorization.

1263312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 319 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 1263312 is about 1123.9715298885. The cubic root of 1263312 is about 108.1027828098.

Adding to 1263312 its reverse (2133621), we get a palindrome (3396933).

The spelling of 1263312 in words is "one million, two hundred sixty-three thousand, three hundred twelve".