2130311 has 4 divisors (see below), whose sum is σ = 2203800. Its totient is φ = 2056824.

The previous prime is 2130307. The next prime is 2130341. The reversal of 2130311 is 1130312.

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 2130311 - 2² = 2130307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2130292 and 2130301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36701 + ... + 36758.

It is an arithmetic number, because the mean of its divisors is an integer number (550950).

2^2130311 is an apocalyptic number.

2130311 is a deficient number, since it is larger than the sum of its proper divisors (73489).

2130311 is an equidigital number, since it uses as much as digits as its factorization.

2130311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73488.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 2130311 is about 1459.5584948881. The cubic root of 2130311 is about 128.6710969090.

Adding to 2130311 its reverse (1130312), we get a palindrome (3260623).

Subtracting from 2130311 its reverse (1130312), we obtain a palindrome (999999).

The spelling of 2130311 in words is "two million, one hundred thirty thousand, three hundred eleven".