323664021423 has 16 divisors (see below), whose sum is σ = 479512190560. Its totient is φ = 215771542848.

The previous prime is 323664021407. The next prime is 323664021449. The reversal of 323664021423 is 324120466323.

323664021423 is a `hidden beast` number, since 3 + 2 + 3 + 6 + 640 + 2 + 1 + 4 + 2 + 3 = 666.

It is not a de Polignac number, because 323664021423 - 2⁴ = 323664021407 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 (323664021403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1678611 + ... + 1861467.

It is an arithmetic number, because the mean of its divisors is an integer number (29969511910).

Almost surely, 2^323664021423 is an apocalyptic number.

323664021423 is a deficient number, since it is larger than the sum of its proper divisors (155848169137).

323664021423 is a wasteful number, since it uses less digits than its factorization.

323664021423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248423 (or 248417 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

Adding to 323664021423 its reverse (324120466323), we get a palindrome (647784487746).

The spelling of 323664021423 in words is "three hundred twenty-three billion, six hundred sixty-four million, twenty-one thousand, four hundred twenty-three".