2130287 has 4 divisors (see below), whose sum is σ = 2255616. Its totient is φ = 2004960.

The previous prime is 2130269. The next prime is 2130307. The reversal of 2130287 is 7820312.

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 2130287 - 2⁸ = 2130031 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 (2136287) 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, 62639 + ... + 62672.

It is an arithmetic number, because the mean of its divisors is an integer number (563904).

2^2130287 is an apocalyptic number.

2130287 is a deficient number, since it is larger than the sum of its proper divisors (125329).

2130287 is a wasteful number, since it uses less digits than its factorization.

2130287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125328.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2130287 is about 1459.5502732006. The cubic root of 2130287 is about 128.6706137060.

Adding to 2130287 its reverse (7820312), we get a palindrome (9950599).

The spelling of 2130287 in words is "two million, one hundred thirty thousand, two hundred eighty-seven".