213240311144 has 32 divisors (see below), whose sum is σ = 463379356800. Its totient is φ = 90101538240.

The previous prime is 213240311143. The next prime is 213240311147. The reversal of 213240311144 is 441113042312.

213240311144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213240311143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26811959 + ... + 26819910.

It is an arithmetic number, because the mean of its divisors is an integer number (14480604900).

Almost surely, 2^213240311144 is an apocalyptic number.

It is an amenable number.

213240311144 is an abundant number, since it is smaller than the sum of its proper divisors (250139045656).

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

213240311144 is a wasteful number, since it uses less digits than its factorization.

213240311144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53631953 (or 53631949 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 213240311144 its reverse (441113042312), we get a palindrome (654353353456).

The spelling of 213240311144 in words is "two hundred thirteen billion, two hundred forty million, three hundred eleven thousand, one hundred forty-four".