1323235009819 has 4 divisors (see below), whose sum is σ = 1327048367544. Its totient is φ = 1319421652096.

The previous prime is 1323235009793. The next prime is 1323235009843. The reversal of 1323235009819 is 9189005323231.

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

It is a cyclic number.

It is not a de Polignac number, because 1323235009819 - 2⁵ = 1323235009787 is a prime.

It is a super-2 number, since 2×1323235009819² (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 (1323235000819) 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, 1906678342 + ... + 1906679035.

It is an arithmetic number, because the mean of its divisors is an integer number (331762091886).

Almost surely, 2^{1323235009819} is an apocalyptic number.

1323235009819 is a deficient number, since it is larger than the sum of its proper divisors (3813357725).

1323235009819 is an equidigital number, since it uses as much as digits as its factorization.

1323235009819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813357724.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 1323235009819 in words is "one trillion, three hundred twenty-three billion, two hundred thirty-five million, nine thousand, eight hundred nineteen".