213344240240 has 40 divisors (see below), whose sum is σ = 496401665760. Its totient is φ = 85272955136.

The previous prime is 213344240233. The next prime is 213344240251. The reversal of 213344240240 is 42042443312.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 905399 + ... + 1116438.

It is an arithmetic number, because the mean of its divisors is an integer number (12410041644).

Almost surely, 2^213344240240 is an apocalyptic number.

213344240240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213344240240 is an abundant number, since it is smaller than the sum of its proper divisors (283057425520).

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

213344240240 is a wasteful number, since it uses less digits than its factorization.

213344240240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023169 (or 2023163 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 213344240240 its reverse (42042443312), we get a palindrome (255386683552).

The spelling of 213344240240 in words is "two hundred thirteen billion, three hundred forty-four million, two hundred forty thousand, two hundred forty".