2222431 has 4 divisors (see below), whose sum is σ = 2244112. Its totient is φ = 2200752.

The previous prime is 2222387. The next prime is 2222443. The reversal of 2222431 is 1342222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2222431 is a prime.

It is a super-2 number, since 2×2222431² = 9878399099522, which contains 22 as substring.

It is a Duffinian number.

2222431 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10686 + ... + 10891.

It is an arithmetic number, because the mean of its divisors is an integer number (561028).

2^2222431 is an apocalyptic number.

2222431 is a deficient number, since it is larger than the sum of its proper divisors (21681).

2222431 is a wasteful number, since it uses less digits than its factorization.

2222431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21680.

The product of its digits is 192, while the sum is 16.

The square root of 2222431 is about 1490.7820095507. The cubic root of 2222431 is about 130.4996745978.

Adding to 2222431 its reverse (1342222), we get a palindrome (3564653).

The spelling of 2222431 in words is "two million, two hundred twenty-two thousand, four hundred thirty-one".