2130531 has 8 divisors (see below), whose sum is σ = 3059280. Its totient is φ = 1311072.

The previous prime is 2130529. The next prime is 2130539. The reversal of 2130531 is 1350312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2130531 - 2¹ = 2130529 is a prime.

It is a super-2 number, since 2×2130531² = 9078324683922, which contains 22 as substring.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 2130531.

It is not an unprimeable number, because it can be changed into a prime (2130539) 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 7 ways as a sum of consecutive naturals, for example, 27276 + ... + 27353.

It is an arithmetic number, because the mean of its divisors is an integer number (382410).

2^2130531 is an apocalyptic number.

2130531 is a deficient number, since it is larger than the sum of its proper divisors (928749).

2130531 is a wasteful number, since it uses less digits than its factorization.

2130531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54645.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 2130531 is about 1459.6338581987. The cubic root of 2130531 is about 128.6755261006.

Adding to 2130531 its reverse (1350312), we get a palindrome (3480843).

The spelling of 2130531 in words is "two million, one hundred thirty thousand, five hundred thirty-one".