213243040144 has 120 divisors (see below), whose sum is σ = 442026083520. Its totient is φ = 99617912064.

The previous prime is 213243040069. The next prime is 213243040147. The reversal of 213243040144 is 441040342312.

It is not an unprimeable number, because it can be changed into a prime (213243040147) 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, 83394514 + ... + 83397070.

It is an arithmetic number, because the mean of its divisors is an integer number (3683550696).

Almost surely, 2^213243040144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213243040144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221013041760).

213243040144 is an abundant number, since it is smaller than the sum of its proper divisors (228783043376).

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

213243040144 is a wasteful number, since it uses less digits than its factorization.

213243040144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837 (or 2808 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 213243040144 its reverse (441040342312), we get a palindrome (654283382456).

The spelling of 213243040144 in words is "two hundred thirteen billion, two hundred forty-three million, forty thousand, one hundred forty-four".