213320311040440 has 128 divisors (see below), whose sum is σ = 484603360053120. Its totient is φ = 84509617766400.

The previous prime is 213320311040423. The next prime is 213320311040453. The reversal of 213320311040440 is 44040113023312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 213320311040399 and 213320311040408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1375463700 + ... + 1375618780.

It is an arithmetic number, because the mean of its divisors is an integer number (3785963750415).

Almost surely, 2^{213320311040440} is an apocalyptic number.

213320311040440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213320311040440 is an abundant number, since it is smaller than the sum of its proper divisors (271283049012680).

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

213320311040440 is a wasteful number, since it uses less digits than its factorization.

213320311040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156113 (or 156109 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 213320311040440 its reverse (44040113023312), we get a palindrome (257360424063752).

The spelling of 213320311040440 in words is "two hundred thirteen trillion, three hundred twenty billion, three hundred eleven million, forty thousand, four hundred forty".