1326947423 has 4 divisors (see below), whose sum is σ = 1327584720. Its totient is φ = 1326310128.

The previous prime is 1326947417. The next prime is 1326947429. The reversal of 1326947423 is 3247496231.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1326947417) and next prime (1326947429).

It is a cyclic number.

It is not a de Polignac number, because 1326947423 - 2¹⁰ = 1326946399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326947429) 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, 315515 + ... + 319692.

It is an arithmetic number, because the mean of its divisors is an integer number (331896180).

Almost surely, 2^1326947423 is an apocalyptic number.

1326947423 is a deficient number, since it is larger than the sum of its proper divisors (637297).

1326947423 is an equidigital number, since it uses as much as digits as its factorization.

1326947423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637296.

The product of its digits is 217728, while the sum is 41.

The square root of 1326947423 is about 36427.2895368294. The cubic root of 1326947423 is about 1098.8824526131.

The spelling of 1326947423 in words is "one billion, three hundred twenty-six million, nine hundred forty-seven thousand, four hundred twenty-three".