11343421391 has 2 divisors, whose sum is σ = 11343421392. Its totient is φ = 11343421390.

The previous prime is 11343421381. The next prime is 11343421417. The reversal of 11343421391 is 19312434311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11343421391 - 2¹⁰ = 11343420367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11343421321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5671710695 + 5671710696.

It is an arithmetic number, because the mean of its divisors is an integer number (5671710696).

Almost surely, 2^11343421391 is an apocalyptic number.

11343421391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11343421391 is an equidigital number, since it uses as much as digits as its factorization.

11343421391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The spelling of 11343421391 in words is "eleven billion, three hundred forty-three million, four hundred twenty-one thousand, three hundred ninety-one".