2057131285 has 12 divisors (see below), whose sum is σ = 2713373964. Its totient is φ = 1496095040.

The previous prime is 2057131267. The next prime is 2057131301. The reversal of 2057131285 is 5821317502.

It can be written as a sum of positive squares in 2 ways, for example, as 789272836 + 1267858449 = 28094^2 + 35607^2 .

It is not a de Polignac number, because 2057131285 - 2⁷ = 2057131157 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 2057131285.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1699504 + ... + 1700713.

It is an arithmetic number, because the mean of its divisors is an integer number (226114497).

Almost surely, 2^2057131285 is an apocalyptic number.

It is an amenable number.

2057131285 is a deficient number, since it is larger than the sum of its proper divisors (656242679).

2057131285 is a wasteful number, since it uses less digits than its factorization.

2057131285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400244 (or 3400233 counting only the distinct ones).

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

The square root of 2057131285 is about 45355.6091900440. The cubic root of 2057131285 is about 1271.8054147467.

Adding to 2057131285 its reverse (5821317502), we get a palindrome (7878448787).

The spelling of 2057131285 in words is "two billion, fifty-seven million, one hundred thirty-one thousand, two hundred eighty-five".