385867131 has 16 divisors (see below), whose sum is σ = 554484000. Its totient is φ = 237277440.

The previous prime is 385867121. The next prime is 385867187. The reversal of 385867131 is 131768583.

It is not a de Polignac number, because 385867131 - 2⁵ = 385867099 is a prime.

It is a super-2 number, since 2×385867131² = 297786885572342322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (385867121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64245 + ... + 69993.

It is an arithmetic number, because the mean of its divisors is an integer number (34655250).

Almost surely, 2^385867131 is an apocalyptic number.

385867131 is a deficient number, since it is larger than the sum of its proper divisors (168616869).

385867131 is a wasteful number, since it uses less digits than its factorization.

385867131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7486.

The product of its digits is 120960, while the sum is 42.

The square root of 385867131 is about 19643.5009863313. The cubic root of 385867131 is about 728.0243892274.

The spelling of 385867131 in words is "three hundred eighty-five million, eight hundred sixty-seven thousand, one hundred thirty-one".