2130863 has 6 divisors (see below), whose sum is σ = 2478816. Its totient is φ = 1826412.

The previous prime is 2130857. The next prime is 2130901. The reversal of 2130863 is 3680312.

It is not a de Polignac number, because 2130863 - 2¹² = 2126767 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 (2130803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21695 + ... + 21792.

It is an arithmetic number, because the mean of its divisors is an integer number (413136).

2^2130863 is an apocalyptic number.

2130863 is a deficient number, since it is larger than the sum of its proper divisors (347953).

2130863 is an equidigital number, since it uses as much as digits as its factorization.

2130863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43501 (or 43494 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2130863 is about 1459.7475809194. The cubic root of 2130863 is about 128.6822095762.

It can be divided in two parts, 2 and 130863, that multiplied together give a triangular number (261726 = T₇₂₃).

The spelling of 2130863 in words is "two million, one hundred thirty thousand, eight hundred sixty-three".