2291381100 has 108 divisors (see below), whose sum is σ = 7194227040. Its totient is φ = 610012800.

The previous prime is 2291381093. The next prime is 2291381107. The reversal of 2291381100 is 11831922.

It is an interprime number because it is at equal distance from previous prime (2291381093) and next prime (2291381107).

It is not an unprimeable number, because it can be changed into a prime (2291381107) 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, 645330 + ... + 648870.

Almost surely, 2^2291381100 is an apocalyptic number.

2291381100 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 2291381100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3597113520).

2291381100 is an abundant number, since it is smaller than the sum of its proper divisors (4902845940).

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

2291381100 is a wasteful number, since it uses less digits than its factorization.

2291381100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4280 (or 4270 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 2291381100 is about 47868.3726483364. The cubic root of 2291381100 is about 1318.3552172139.

The spelling of 2291381100 in words is "two billion, two hundred ninety-one million, three hundred eighty-one thousand, one hundred".