384040209231 has 40 divisors (see below), whose sum is σ = 694212757920. Its totient is φ = 206542628352.

The previous prime is 384040209227. The next prime is 384040209271. The reversal of 384040209231 is 132902040483.

384040209231 is a `hidden beast` number, since 384 + 0 + 40 + 2 + 0 + 9 + 231 = 666.

It is not a de Polignac number, because 384040209231 - 2² = 384040209227 is a prime.

It is a super-2 number, since 2×384040209231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384040209221) 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, 19911526 + ... + 19930803.

It is an arithmetic number, because the mean of its divisors is an integer number (17355318948).

Almost surely, 2^384040209231 is an apocalyptic number.

384040209231 is a deficient number, since it is larger than the sum of its proper divisors (310172548689).

384040209231 is a wasteful number, since it uses less digits than its factorization.

384040209231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39842365 (or 39842356 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 384040209231 in words is "three hundred eighty-four billion, forty million, two hundred nine thousand, two hundred thirty-one".