22031143 has 8 divisors (see below), whose sum is σ = 22291376. Its totient is φ = 21772800.

The previous prime is 22031137. The next prime is 22031159. The reversal of 22031143 is 34113022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22031143 - 2¹³ = 22022951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40453 + ... + 40993.

It is an arithmetic number, because the mean of its divisors is an integer number (2786422).

Almost surely, 2^22031143 is an apocalyptic number.

22031143 is a deficient number, since it is larger than the sum of its proper divisors (260233).

22031143 is a wasteful number, since it uses less digits than its factorization.

22031143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 22031143 is about 4693.7344407199. The cubic root of 22031143 is about 280.3360887724.

Adding to 22031143 its reverse (34113022), we get a palindrome (56144165).

The spelling of 22031143 in words is "twenty-two million, thirty-one thousand, one hundred forty-three".