2203430431240 has 128 divisors (see below), whose sum is σ = 5176751821920. Its totient is φ = 843277926400.

The previous prime is 2203430431159. The next prime is 2203430431247. The reversal of 2203430431240 is 421340343022.

It can be written as a sum of positive squares in 16 ways, for example, as 413523591364 + 1789906839876 = 643058^2 + 1337874^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2203430431199 and 2203430431208.

It is not an unprimeable number, because it can be changed into a prime (2203430431247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 272664000 + ... + 272672080.

Almost surely, 2^{2203430431240} is an apocalyptic number.

2203430431240 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 2203430431240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2588375910960).

2203430431240 is an abundant number, since it is smaller than the sum of its proper divisors (2973321390680).

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

2203430431240 is a wasteful number, since it uses less digits than its factorization.

2203430431240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11323 (or 11319 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 2203430431240 its reverse (421340343022), we get a palindrome (2624770774262).

The spelling of 2203430431240 in words is "two trillion, two hundred three billion, four hundred thirty million, four hundred thirty-one thousand, two hundred forty".