203213323140440 has 128 divisors (see below), whose sum is σ = 473762165760000. Its totient is φ = 78355408320000.

The previous prime is 203213323140349. The next prime is 203213323140463. The reversal of 203213323140440 is 44041323312302.

203213323140440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 203213323140397 and 203213323140406.

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, 3215419961 + ... + 3215483159.

It is an arithmetic number, because the mean of its divisors is an integer number (3701266920000).

Almost surely, 2^{203213323140440} is an apocalyptic number.

203213323140440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203213323140440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236881082880000).

203213323140440 is an abundant number, since it is smaller than the sum of its proper divisors (270548842619560).

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

203213323140440 is a wasteful number, since it uses less digits than its factorization.

203213323140440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67681 (or 67677 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 203213323140440 its reverse (44041323312302), we get a palindrome (247254646452742).

The spelling of 203213323140440 in words is "two hundred three trillion, two hundred thirteen billion, three hundred twenty-three million, one hundred forty thousand, four hundred forty".