384431013 has 24 divisors (see below), whose sum is σ = 589807296. Its totient is φ = 240451200.

The previous prime is 384431011. The next prime is 384431029. The reversal of 384431013 is 310134483.

It is not a de Polignac number, because 384431013 - 2¹ = 384431011 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384431011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46848 + ... + 54438.

It is an arithmetic number, because the mean of its divisors is an integer number (24575304).

Almost surely, 2^384431013 is an apocalyptic number.

It is an amenable number.

384431013 is a deficient number, since it is larger than the sum of its proper divisors (205376283).

384431013 is a wasteful number, since it uses less digits than its factorization.

384431013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7945 (or 7942 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 384431013 is about 19606.9123780365. The cubic root of 384431013 is about 727.1200807963.

Adding to 384431013 its reverse (310134483), we get a palindrome (694565496).

The spelling of 384431013 in words is "three hundred eighty-four million, four hundred thirty-one thousand, thirteen".