385311311 has 24 divisors (see below), whose sum is σ = 494376960. Its totient is φ = 293824080.

The previous prime is 385311287. The next prime is 385311379. The reversal of 385311311 is 113113583.

It is not a de Polignac number, because 385311311 - 2¹⁴ = 385294927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385311011) 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, 34970 + ... + 44648.

It is an arithmetic number, because the mean of its divisors is an integer number (20599040).

Almost surely, 2^385311311 is an apocalyptic number.

385311311 is a deficient number, since it is larger than the sum of its proper divisors (109065649).

385311311 is a wasteful number, since it uses less digits than its factorization.

385311311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9755 (or 9744 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

The square root of 385311311 is about 19629.3482061937. The cubic root of 385311311 is about 727.6746617942.

Adding to 385311311 its reverse (113113583), we get a palindrome (498424894).

The spelling of 385311311 in words is "three hundred eighty-five million, three hundred eleven thousand, three hundred eleven".