11343421409 has 4 divisors (see below), whose sum is σ = 11650000404. Its totient is φ = 11036842416.

The previous prime is 11343421391. The next prime is 11343421417. The reversal of 11343421409 is 90412434311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90412434311 = 53 ⋅1705894987.

It can be written as a sum of positive squares in 2 ways, for example, as 6391203025 + 4952218384 = 79945^2 + 70372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11343421409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11343421909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153289442 + ... + 153289515.

It is an arithmetic number, because the mean of its divisors is an integer number (2912500101).

Almost surely, 2^11343421409 is an apocalyptic number.

It is an amenable number.

11343421409 is a deficient number, since it is larger than the sum of its proper divisors (306578995).

11343421409 is an equidigital number, since it uses as much as digits as its factorization.

11343421409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306578994.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 11343421409 in words is "eleven billion, three hundred forty-three million, four hundred twenty-one thousand, four hundred nine".