203400003540 has 48 divisors (see below), whose sum is σ = 569539591488. Its totient is φ = 54238136064.

The previous prime is 203400003539. The next prime is 203400003553. The reversal of 203400003540 is 45300004302.

It is a happy number.

203400003540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×203400003540² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3315384 + ... + 3376176.

It is an arithmetic number, because the mean of its divisors is an integer number (11865408156).

Almost surely, 2^203400003540 is an apocalyptic number.

203400003540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203400003540 is an abundant number, since it is smaller than the sum of its proper divisors (366139587948).

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

203400003540 is a wasteful number, since it uses less digits than its factorization.

203400003540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116568 (or 116566 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

Adding to 203400003540 its reverse (45300004302), we get a palindrome (248700007842).

The spelling of 203400003540 in words is "two hundred three billion, four hundred million, three thousand, five hundred forty".