2130511 has 4 divisors (see below), whose sum is σ = 2133432. Its totient is φ = 2127592.

The previous prime is 2130509. The next prime is 2130523. The reversal of 2130511 is 1150312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2130511 - 2¹ = 2130509 is a prime.

It is a super-2 number, since 2×2130511² = 9078154242242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2130491 and 2130500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130581) 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, 681 + ... + 2173.

It is an arithmetic number, because the mean of its divisors is an integer number (533358).

2^2130511 is an apocalyptic number.

2130511 is a deficient number, since it is larger than the sum of its proper divisors (2921).

2130511 is a wasteful number, since it uses less digits than its factorization.

2130511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 2130511 is about 1459.6270071494. The cubic root of 2130511 is about 128.6751234594.

Adding to 2130511 its reverse (1150312), we get a palindrome (3280823).

It can be divided in two parts, 21305 and 11, that added together give a square (21316 = 146²).

The spelling of 2130511 in words is "two million, one hundred thirty thousand, five hundred eleven".