323191999442 has 16 divisors (see below), whose sum is σ = 522236823360. Its totient is φ = 149120555472.

The previous prime is 323191999381. The next prime is 323191999469. The reversal of 323191999442 is 244999191323.

It is a super-2 number, since 2×323191999442² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1786328 + ... + 1958915.

It is an arithmetic number, because the mean of its divisors is an integer number (32639801460).

Almost surely, 2^323191999442 is an apocalyptic number.

323191999442 is a deficient number, since it is larger than the sum of its proper divisors (199044823918).

323191999442 is a wasteful number, since it uses less digits than its factorization.

323191999442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3748577.

The product of its digits is 3779136, while the sum is 56.

The spelling of 323191999442 in words is "three hundred twenty-three billion, one hundred ninety-one million, nine hundred ninety-nine thousand, four hundred forty-two".