2163071287 has 8 divisors (see below), whose sum is σ = 2331440496. Its totient is φ = 1994984832.

The previous prime is 2163071203. The next prime is 2163071291. The reversal of 2163071287 is 7821703612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2163071287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163071297) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 54658 + ... + 85519.

It is an arithmetic number, because the mean of its divisors is an integer number (291430062).

Almost surely, 2^2163071287 is an apocalyptic number.

2163071287 is a deficient number, since it is larger than the sum of its proper divisors (168369209).

2163071287 is a wasteful number, since it uses less digits than its factorization.

2163071287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141377.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 2163071287 is about 46508.8302045966. The cubic root of 2163071287 is about 1293.2731986084.

Adding to 2163071287 its reverse (7821703612), we get a palindrome (9984774899).

The spelling of 2163071287 in words is "two billion, one hundred sixty-three million, seventy-one thousand, two hundred eighty-seven".