385217101 has 4 divisors (see below), whose sum is σ = 395628412. Its totient is φ = 374805792.

The previous prime is 385217089. The next prime is 385217111. The reversal of 385217101 is 101712583.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 178863876 + 206353225 = 13374^2 + 14365^2 .

It is a cyclic number.

It is not a de Polignac number, because 385217101 - 2⁹ = 385216589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 385217101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385217111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5205600 + ... + 5205673.

It is an arithmetic number, because the mean of its divisors is an integer number (98907103).

Almost surely, 2^385217101 is an apocalyptic number.

It is an amenable number.

385217101 is a deficient number, since it is larger than the sum of its proper divisors (10411311).

385217101 is a wasteful number, since it uses less digits than its factorization.

385217101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10411310.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 385217101 is about 19626.9483364073. The cubic root of 385217101 is about 727.6153506036.

Adding to 385217101 its reverse (101712583), we get a palindrome (486929684).

The spelling of 385217101 in words is "three hundred eighty-five million, two hundred seventeen thousand, one hundred one".