2231567 has 4 divisors (see below), whose sum is σ = 2403240. Its totient is φ = 2059896.

The previous prime is 2231533. The next prime is 2231587. The reversal of 2231567 is 7651322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2231567 - 2⁸ = 2231311 is a prime.

It is a super-3 number, since 3×2231567³ = 33338883101907483789, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231587) 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, 85817 + ... + 85842.

It is an arithmetic number, because the mean of its divisors is an integer number (600810).

2^2231567 is an apocalyptic number.

2231567 is a deficient number, since it is larger than the sum of its proper divisors (171673).

2231567 is a wasteful number, since it uses less digits than its factorization.

2231567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171672.

The product of its digits is 2520, while the sum is 26.

The square root of 2231567 is about 1493.8430305758. The cubic root of 2231567 is about 130.6782500780.

Adding to 2231567 its reverse (7651322), we get a palindrome (9882889).

The spelling of 2231567 in words is "two million, two hundred thirty-one thousand, five hundred sixty-seven".