2231560 has 32 divisors (see below), whose sum is σ = 5132160. Its totient is φ = 872896.

The previous prime is 2231533. The next prime is 2231587. The reversal of 2231560 is 651322.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2231533) and next prime (2231587).

It is a super-3 number, since 3×2231560³ = 33338569369741248000, which contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1287 + ... + 2473.

It is an arithmetic number, because the mean of its divisors is an integer number (160380).

2^2231560 is an apocalyptic number.

2231560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2231560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2566080).

2231560 is an abundant number, since it is smaller than the sum of its proper divisors (2900600).

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

2231560 is a wasteful number, since it uses less digits than its factorization.

2231560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245 (or 1241 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2231560 is about 1493.8406876237. The cubic root of 2231560 is about 130.6781134403.

Adding to 2231560 its reverse (651322), we get a palindrome (2882882).

The spelling of 2231560 in words is "two million, two hundred thirty-one thousand, five hundred sixty".