2303144340440 has 128 divisors (see below), whose sum is σ = 5406653534400. Its totient is φ = 881902909440.

The previous prime is 2303144340403. The next prime is 2303144340443. The reversal of 2303144340440 is 440434413032.

It is a super-3 number, since 3×2303144340440³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2303144340397 and 2303144340406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2303144340443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79588214 + ... + 79617146.

Almost surely, 2^{2303144340440} is an apocalyptic number.

2303144340440 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 2303144340440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2703326767200).

2303144340440 is an abundant number, since it is smaller than the sum of its proper divisors (3103509193960).

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

2303144340440 is a wasteful number, since it uses less digits than its factorization.

2303144340440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29557 (or 29553 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 2303144340440 its reverse (440434413032), we get a palindrome (2743578753472).

It can be divided in two parts, 230314 and 4340440, that added together give a palindrome (4570754).

The spelling of 2303144340440 in words is "two trillion, three hundred three billion, one hundred forty-four million, three hundred forty thousand, four hundred forty".