1312304 has 20 divisors (see below), whose sum is σ = 2906064. Its totient is φ = 562368.

The previous prime is 1312303. The next prime is 1312319. The reversal of 1312304 is 4032131.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (1312301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5747 + ... + 5970.

2^1312304 is an apocalyptic number.

1312304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1312304 is an abundant number, since it is smaller than the sum of its proper divisors (1593760).

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

1312304 is a wasteful number, since it uses less digits than its factorization.

1312304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11732 (or 11726 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1312304 is about 1145.5583791322. The cubic root of 1312304 is about 109.4825281576.

Adding to 1312304 its reverse (4032131), we get a palindrome (5344435).

The spelling of 1312304 in words is "one million, three hundred twelve thousand, three hundred four".