2870311681 has 4 divisors (see below), whose sum is σ = 2886903252. Its totient is φ = 2853720112.

The previous prime is 2870311679. The next prime is 2870311699. The reversal of 2870311681 is 1861130782.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1647061056 + 1223250625 = 40584^2 + 34975^2 .

It is a cyclic number.

It is not a de Polignac number, because 2870311681 - 2¹ = 2870311679 is a prime.

It is a super-2 number, since 2×2870311681² = 16477378292170091522, which contains 22 as substring.

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 2870311681.

It is not an unprimeable number, because it can be changed into a prime (2870311651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8295526 + ... + 8295871.

It is an arithmetic number, because the mean of its divisors is an integer number (721725813).

Almost surely, 2^2870311681 is an apocalyptic number.

It is an amenable number.

2870311681 is a deficient number, since it is larger than the sum of its proper divisors (16591571).

2870311681 is a wasteful number, since it uses less digits than its factorization.

2870311681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16591570.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 2870311681 is about 53575.2898358936. The cubic root of 2870311681 is about 1421.1601444414.

The spelling of 2870311681 in words is "two billion, eight hundred seventy million, three hundred eleven thousand, six hundred eighty-one".