22143031 has 8 divisors (see below), whose sum is σ = 22619520. Its totient is φ = 21670968.

The previous prime is 22143019. The next prime is 22143041. The reversal of 22143031 is 13034122.

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 22143031 - 2¹³ = 22134839 is a prime.

It is a super-2 number, since 2×22143031² = 980627643733922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22142996 and 22143014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22143001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10200 + ... + 12178.

It is an arithmetic number, because the mean of its divisors is an integer number (2827440).

Almost surely, 2^22143031 is an apocalyptic number.

22143031 is a deficient number, since it is larger than the sum of its proper divisors (476489).

22143031 is a wasteful number, since it uses less digits than its factorization.

22143031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213.

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

The square root of 22143031 is about 4705.6382138877. The cubic root of 22143031 is about 280.8098619586.

Adding to 22143031 its reverse (13034122), we get a palindrome (35177153).

The spelling of 22143031 in words is "twenty-two million, one hundred forty-three thousand, thirty-one".