385257211 has 2 divisors, whose sum is σ = 385257212. Its totient is φ = 385257210.

The previous prime is 385257163. The next prime is 385257221. The reversal of 385257211 is 112752583.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 385257211 - 2¹¹ = 385255163 is a prime.

It is not a weakly prime, because it can be changed into another prime (385257221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192628605 + 192628606.

It is an arithmetic number, because the mean of its divisors is an integer number (192628606).

Almost surely, 2^385257211 is an apocalyptic number.

385257211 is a deficient number, since it is larger than the sum of its proper divisors (1).

385257211 is an equidigital number, since it uses as much as digits as its factorization.

385257211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 34.

The square root of 385257211 is about 19627.9701191947. The cubic root of 385257211 is about 727.6406035832.

It can be divided in two parts, 3852572 and 11, that added together give a palindrome (3852583).

The spelling of 385257211 in words is "three hundred eighty-five million, two hundred fifty-seven thousand, two hundred eleven".