385731133 has 2 divisors, whose sum is σ = 385731134. Its totient is φ = 385731132.

The previous prime is 385731097. The next prime is 385731149. The reversal of 385731133 is 331137583.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385651044 + 80089 = 19638^2 + 283^2 .

It is a cyclic number.

It is not a de Polignac number, because 385731133 - 2⁹ = 385730621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385731163) 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 as a sum of consecutive naturals, namely, 192865566 + 192865567.

It is an arithmetic number, because the mean of its divisors is an integer number (192865567).

Almost surely, 2^385731133 is an apocalyptic number.

It is an amenable number.

385731133 is a deficient number, since it is larger than the sum of its proper divisors (1).

385731133 is an equidigital number, since it uses as much as digits as its factorization.

385731133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 385731133 is about 19640.0390274561. The cubic root of 385731133 is about 727.9388489925.

The spelling of 385731133 in words is "three hundred eighty-five million, seven hundred thirty-one thousand, one hundred thirty-three".