2231645700 has 144 divisors (see below), whose sum is σ = 6718320000. Its totient is φ = 571253760.

The previous prime is 2231645693. The next prime is 2231645737. The reversal of 2231645700 is 75461322.

It is a super-3 number, since 3×2231645700³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1730656 + ... + 1731944.

It is an arithmetic number, because the mean of its divisors is an integer number (46655000).

Almost surely, 2^2231645700 is an apocalyptic number.

2231645700 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 2231645700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3359160000).

2231645700 is an abundant number, since it is smaller than the sum of its proper divisors (4486674300).

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

2231645700 is a wasteful number, since it uses less digits than its factorization.

2231645700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 2231645700 is about 47240.2974165066. The cubic root of 2231645700 is about 1306.7978625673.

The spelling of 2231645700 in words is "two billion, two hundred thirty-one million, six hundred forty-five thousand, seven hundred".