22031130 has 64 divisors (see below), whose sum is σ = 58340736. Its totient is φ = 5280000.

The previous prime is 22031129. The next prime is 22031137. The reversal of 22031130 is 3113022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22031137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33000 + ... + 33660.

It is an arithmetic number, because the mean of its divisors is an integer number (911574).

Almost surely, 2^22031130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22031130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29170368).

22031130 is an abundant number, since it is smaller than the sum of its proper divisors (36309606).

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

22031130 is a wasteful number, since it uses less digits than its factorization.

22031130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 22031130 is about 4693.7330558948. The cubic root of 22031130 is about 280.3360336328.

Adding to 22031130 its reverse (3113022), we get a palindrome (25144152).

It can be divided in two parts, 2203 and 1130, that added together give a palindrome (3333).

The spelling of 22031130 in words is "twenty-two million, thirty-one thousand, one hundred thirty".