1312404 has 12 divisors (see below), whose sum is σ = 3062304. Its totient is φ = 437464.

The previous prime is 1312397. The next prime is 1312411. The reversal of 1312404 is 4042131.

It is an interprime number because it is at equal distance from previous prime (1312397) and next prime (1312411).

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54672 + ... + 54695.

It is an arithmetic number, because the mean of its divisors is an integer number (255192).

2^1312404 is an apocalyptic number.

It is an amenable number.

1312404 is an abundant number, since it is smaller than the sum of its proper divisors (1749900).

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

1312404 is a wasteful number, since it uses less digits than its factorization.

1312404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109374 (or 109372 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1312404 is about 1145.6020251379. The cubic root of 1312404 is about 109.4853090109.

Adding to 1312404 its reverse (4042131), we get a palindrome (5354535).

The spelling of 1312404 in words is "one million, three hundred twelve thousand, four hundred four".