213230240500 has 48 divisors (see below), whose sum is σ = 470305796688. Its totient is φ = 84447600000.

The previous prime is 213230240497. The next prime is 213230240519. The reversal of 213230240500 is 5042032312.

It can be written as a sum of positive squares in 8 ways, for example, as 28259856 + 213201980644 = 5316^2 + 461738^2 .

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 15 ways as a sum of consecutive naturals, for example, 2060691 + ... + 2161690.

It is an arithmetic number, because the mean of its divisors is an integer number (9798037431).

Almost surely, 2^213230240500 is an apocalyptic number.

213230240500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213230240500 is an abundant number, since it is smaller than the sum of its proper divisors (257075556188).

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

213230240500 is a wasteful number, since it uses less digits than its factorization.

213230240500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222501 (or 4222489 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 213230240500 its reverse (5042032312), we get a palindrome (218272272812).

The spelling of 213230240500 in words is "two hundred thirteen billion, two hundred thirty million, two hundred forty thousand, five hundred".