203402103440 has 40 divisors (see below), whose sum is σ = 473696874168. Its totient is φ = 81225446400.

The previous prime is 203402103413. The next prime is 203402103479. The reversal of 203402103440 is 44301204302.

It can be written as a sum of positive squares in 4 ways, for example, as 101778864784 + 101623238656 = 319028^2 + 318784^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2067167 + ... + 2163326.

Almost surely, 2^203402103440 is an apocalyptic number.

203402103440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203402103440 is an abundant number, since it is smaller than the sum of its proper divisors (270294770728).

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

203402103440 is a wasteful number, since it uses less digits than its factorization.

203402103440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4231107 (or 4231101 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 203402103440 its reverse (44301204302), we get a palindrome (247703307742).

The spelling of 203402103440 in words is "two hundred three billion, four hundred two million, one hundred three thousand, four hundred forty".