2231947000 has 96 divisors (see below), whose sum is σ = 5548767120. Its totient is φ = 840153600.

The previous prime is 2231946961. The next prime is 2231947001. The reversal of 2231947000 is 7491322.

It is a super-3 number, since 3×2231947000³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2231947000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231947001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285139 + ... + 292861.

Almost surely, 2^2231947000 is an apocalyptic number.

2231947000 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 2231947000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2774383560).

2231947000 is an abundant number, since it is smaller than the sum of its proper divisors (3316820120).

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

2231947000 is a wasteful number, since it uses less digits than its factorization.

2231947000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7778 (or 7747 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 2231947000 is about 47243.4863235134. The cubic root of 2231947000 is about 1306.8566712568.

The spelling of 2231947000 in words is "two billion, two hundred thirty-one million, nine hundred forty-seven thousand".