384742631 has 16 divisors (see below), whose sum is σ = 480024384. Its totient is φ = 300236544.

The previous prime is 384742627. The next prime is 384742649. The reversal of 384742631 is 136247483.

It is a cyclic number.

It is not a de Polignac number, because 384742631 - 2² = 384742627 is a prime.

It is a super-2 number, since 2×384742631² = 296053784217604322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384742601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22316 + ... + 35601.

It is an arithmetic number, because the mean of its divisors is an integer number (30001524).

Almost surely, 2^384742631 is an apocalyptic number.

384742631 is a deficient number, since it is larger than the sum of its proper divisors (95281753).

384742631 is a wasteful number, since it uses less digits than its factorization.

384742631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58010.

The product of its digits is 96768, while the sum is 38.

The square root of 384742631 is about 19614.8574045288. The cubic root of 384742631 is about 727.3164944593.

The spelling of 384742631 in words is "three hundred eighty-four million, seven hundred forty-two thousand, six hundred thirty-one".