22231031000 has 64 divisors (see below), whose sum is σ = 52049088000. Its totient is φ = 8887545600.

The previous prime is 22231030957. The next prime is 22231031051. The reversal of 22231031000 is 13013222.

It is a happy number.

It is a super-2 number, since 2×22231031000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2234036 + ... + 2243964.

It is an arithmetic number, because the mean of its divisors is an integer number (813267000).

Almost surely, 2^22231031000 is an apocalyptic number.

22231031000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22231031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26024544000).

22231031000 is an abundant number, since it is smaller than the sum of its proper divisors (29818057000).

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

22231031000 is a wasteful number, since it uses less digits than its factorization.

22231031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12189 (or 12175 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 22231031000 its reverse (13013222), we get a palindrome (22244044222).

The spelling of 22231031000 in words is "twenty-two billion, two hundred thirty-one million, thirty-one thousand".