1312305404 has 6 divisors (see below), whose sum is σ = 2296534464. Its totient is φ = 656152700.

The previous prime is 1312305403. The next prime is 1312305413. The reversal of 1312305404 is 4045032131.

It is a super-3 number, since 3×1312305404³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1312305404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312305403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164038172 + ... + 164038179.

It is an arithmetic number, because the mean of its divisors is an integer number (382755744).

Almost surely, 2^1312305404 is an apocalyptic number.

It is an amenable number.

1312305404 is a deficient number, since it is larger than the sum of its proper divisors (984229060).

1312305404 is a wasteful number, since it uses less digits than its factorization.

1312305404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328076355 (or 328076353 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1312305404 is about 36225.7560859673. The cubic root of 1312305404 is about 1094.8256720178.

Adding to 1312305404 its reverse (4045032131), we get a palindrome (5357337535).

The spelling of 1312305404 in words is "one billion, three hundred twelve million, three hundred five thousand, four hundred four".