2156313163 has 4 divisors (see below), whose sum is σ = 2156952448. Its totient is φ = 2155673880.

The previous prime is 2156313161. The next prime is 2156313197. The reversal of 2156313163 is 3613136512.

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

It is a cyclic number.

It is not a de Polignac number, because 2156313163 - 2¹ = 2156313161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156313161) 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 3 ways as a sum of consecutive naturals, for example, 314556 + ... + 321337.

It is an arithmetic number, because the mean of its divisors is an integer number (539238112).

Almost surely, 2^2156313163 is an apocalyptic number.

2156313163 is a deficient number, since it is larger than the sum of its proper divisors (639285).

2156313163 is an equidigital number, since it uses as much as digits as its factorization.

2156313163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639284.

The product of its digits is 9720, while the sum is 31.

The square root of 2156313163 is about 46436.1191638578. The cubic root of 2156313163 is about 1291.9249276240.

Adding to 2156313163 its reverse (3613136512), we get a palindrome (5769449675).

The spelling of 2156313163 in words is "two billion, one hundred fifty-six million, three hundred thirteen thousand, one hundred sixty-three".