1312433533409 has 4 divisors (see below), whose sum is σ = 1317071108016. Its totient is φ = 1307795958804.

The previous prime is 1312433533403. The next prime is 1312433533417. The reversal of 1312433533409 is 9043353342131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1312433533409 - 2⁴ = 1312433533393 is a prime.

It is a super-2 number, since 2×1312433533409² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312433533403) 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, 2318786879 + ... + 2318787444.

It is an arithmetic number, because the mean of its divisors is an integer number (329267777004).

Almost surely, 2^{1312433533409} is an apocalyptic number.

It is an amenable number.

1312433533409 is a deficient number, since it is larger than the sum of its proper divisors (4637574607).

1312433533409 is an equidigital number, since it uses as much as digits as its factorization.

1312433533409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4637574606.

The product of its (nonzero) digits is 349920, while the sum is 41.

The spelling of 1312433533409 in words is "one trillion, three hundred twelve billion, four hundred thirty-three million, five hundred thirty-three thousand, four hundred nine".