2231568 has 30 divisors (see below), whose sum is σ = 6245694. Its totient is φ = 743808.

The previous prime is 2231533. The next prime is 2231587. The reversal of 2231568 is 8651322.

It can be written as a sum of positive squares in only one way, i.e., 2214144 + 17424 = 1488^2 + 132^2 .

It is a super-3 number, since 3×2231568³ = 33338927920949047296, which contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7605 + ... + 7892.

2^2231568 is an apocalyptic number.

It is an amenable number.

2231568 is an abundant number, since it is smaller than the sum of its proper divisors (4014126).

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

2231568 is a wasteful number, since it uses less digits than its factorization.

2231568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15511 (or 15502 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2231568 is about 1493.8433652830. The cubic root of 2231568 is about 130.6782695976.

It can be divided in two parts, 22 and 31568, that multiplied together give a palindrome (694496).

The spelling of 2231568 in words is "two million, two hundred thirty-one thousand, five hundred sixty-eight".