2231100 has 108 divisors (see below), whose sum is σ = 7289464. Its totient is φ = 570240.

The previous prime is 2231093. The next prime is 2231107. The reversal of 2231100 is 11322.

It is a happy number.

2231100 is nontrivially palindromic in base 14.

It is an interprime number because it is at equal distance from previous prime (2231093) and next prime (2231107).

It is a super-3 number, since 3×2231100³ = 33317956998693000000, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231107) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33267 + ... + 33333.

2^2231100 is an apocalyptic number.

2231100 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 2231100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3644732).

2231100 is an abundant number, since it is smaller than the sum of its proper divisors (5058364).

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

2231100 is a wasteful number, since it uses less digits than its factorization.

2231100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2231100 is about 1493.6867141406. The cubic root of 2231100 is about 130.6691337634.

Adding to 2231100 its reverse (11322), we get a palindrome (2242422).

The spelling of 2231100 in words is "two million, two hundred thirty-one thousand, one hundred".