5231385 has 20 divisors (see below), whose sum is σ = 9378468. Its totient is φ = 2789856.

The previous prime is 5231371. The next prime is 5231389. The reversal of 5231385 is 5831325.

5231385 is a `hidden beast` number, since 523 + 138 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2368521 + 2862864 = 1539^2 + 1692^2 .

It is not a de Polignac number, because 5231385 - 2⁸ = 5231129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5231389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6054 + ... + 6863.

Almost surely, 2^5231385 is an apocalyptic number.

It is an amenable number.

5231385 is a deficient number, since it is larger than the sum of its proper divisors (4147083).

5231385 is a wasteful number, since it uses less digits than its factorization.

5231385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12934 (or 12925 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 5231385 is about 2287.2221142687. Note that the first 3 decimals coincide. The cubic root of 5231385 is about 173.5956723599.

The spelling of 5231385 in words is "five million, two hundred thirty-one thousand, three hundred eighty-five".