385687311 has 16 divisors (see below), whose sum is σ = 530310144. Its totient is φ = 249201504.

The previous prime is 385687303. The next prime is 385687343. The reversal of 385687311 is 113786583.

It is not a de Polignac number, because 385687311 - 2³ = 385687303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385686311) 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, 1245 + ... + 27801.

It is an arithmetic number, because the mean of its divisors is an integer number (33144384).

Almost surely, 2^385687311 is an apocalyptic number.

385687311 is a deficient number, since it is larger than the sum of its proper divisors (144622833).

385687311 is a wasteful number, since it uses less digits than its factorization.

385687311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26710.

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

The square root of 385687311 is about 19638.9233666207. The cubic root of 385687311 is about 727.9112814792.

The spelling of 385687311 in words is "three hundred eighty-five million, six hundred eighty-seven thousand, three hundred eleven".