203430132440 has 16 divisors (see below), whose sum is σ = 457717798080. Its totient is φ = 81372052960.

The previous prime is 203430132421. The next prime is 203430132491. The reversal of 203430132440 is 44231034302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2542876616 + ... + 2542876695.

It is an arithmetic number, because the mean of its divisors is an integer number (28607362380).

Almost surely, 2^203430132440 is an apocalyptic number.

203430132440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203430132440 is an abundant number, since it is smaller than the sum of its proper divisors (254287665640).

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

203430132440 is a wasteful number, since it uses less digits than its factorization.

203430132440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085753322 (or 5085753318 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 203430132440 its reverse (44231034302), we get a palindrome (247661166742).

The spelling of 203430132440 in words is "two hundred three billion, four hundred thirty million, one hundred thirty-two thousand, four hundred forty".