383321320947 has 40 divisors (see below), whose sum is σ = 597858084384. Its totient is φ = 244295263872.

The previous prime is 383321320939. The next prime is 383321320981. The reversal of 383321320947 is 749023123383.

383321320947 is a `hidden beast` number, since 3 + 83 + 321 + 3 + 209 + 47 = 666.

It is not a de Polignac number, because 383321320947 - 2³ = 383321320939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (383321321947) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3207153 + ... + 3324525.

Almost surely, 2^383321320947 is an apocalyptic number.

383321320947 is a deficient number, since it is larger than the sum of its proper divisors (214536763437).

383321320947 is a wasteful number, since it uses less digits than its factorization.

383321320947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119161 (or 119152 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 383321320947 in words is "three hundred eighty-three billion, three hundred twenty-one million, three hundred twenty thousand, nine hundred forty-seven".