2143523000 has 128 divisors (see below), whose sum is σ = 5336884800. Its totient is φ = 803520000.

The previous prime is 2143522999. The next prime is 2143523029. The reversal of 2143523000 is 3253412.

It is a happy number.

It is a super-4 number, since 4×2143523000⁴ (a number of 38 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1918442 + ... + 1919558.

Almost surely, 2^2143523000 is an apocalyptic number.

2143523000 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 2143523000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2668442400).

2143523000 is an abundant number, since it is smaller than the sum of its proper divisors (3193361800).

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

2143523000 is a wasteful number, since it uses less digits than its factorization.

2143523000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 2143523000 is about 46298.1965091514. The cubic root of 2143523000 is about 1289.3655113448.

Adding to 2143523000 its reverse (3253412), we get a palindrome (2146776412).

The spelling of 2143523000 in words is "two billion, one hundred forty-three million, five hundred twenty-three thousand".