2231530 has 32 divisors (see below), whose sum is σ = 4665600. Its totient is φ = 752640.

The previous prime is 2231519. The next prime is 2231533. The reversal of 2231530 is 351322.

It is a super-3 number, since 3×2231530³ = 33337224825607731000, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (2231533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4746 + ... + 5194.

It is an arithmetic number, because the mean of its divisors is an integer number (145800).

2^2231530 is an apocalyptic number.

2231530 is an abundant number, since it is smaller than the sum of its proper divisors (2434070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2231530 is a wasteful number, since it uses less digits than its factorization.

2231530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 2231530 is about 1493.8306463585. The cubic root of 2231530 is about 130.6775278468.

Adding to 2231530 its reverse (351322), we get a palindrome (2582852).

The spelling of 2231530 in words is "two million, two hundred thirty-one thousand, five hundred thirty".