384213081 has 16 divisors (see below), whose sum is σ = 588416000. Its totient is φ = 218444688.

The previous prime is 384213077. The next prime is 384213131. The reversal of 384213081 is 180312483.

It is not a de Polignac number, because 384213081 - 2² = 384213077 is a prime.

It is a super-2 number, since 2×384213081² = 295239383223025122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384213061) 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, 41791 + ... + 50148.

It is an arithmetic number, because the mean of its divisors is an integer number (36776000).

Almost surely, 2^384213081 is an apocalyptic number.

It is an amenable number.

384213081 is a deficient number, since it is larger than the sum of its proper divisors (204202919).

384213081 is a wasteful number, since it uses less digits than its factorization.

384213081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92148.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 384213081 is about 19601.3540603704. The cubic root of 384213081 is about 726.9826545903.

The spelling of 384213081 in words is "three hundred eighty-four million, two hundred thirteen thousand, eighty-one".