203402003531244 has 144 divisors (see below), whose sum is σ = 584634598073568. Its totient is φ = 54690021722112.

The previous prime is 203402003531231. The next prime is 203402003531303. The reversal of 203402003531244 is 442135300204302.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85724842 + ... + 88065614.

It is an arithmetic number, because the mean of its divisors is an integer number (4059962486622).

Almost surely, 2^{203402003531244} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203402003531244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292317299036784).

203402003531244 is an abundant number, since it is smaller than the sum of its proper divisors (381232594542324).

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

203402003531244 is a wasteful number, since it uses less digits than its factorization.

203402003531244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349504 (or 2349495 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 203402003531244 its reverse (442135300204302), we get a palindrome (645537303735546).

The spelling of 203402003531244 in words is "two hundred three trillion, four hundred two billion, three million, five hundred thirty-one thousand, two hundred forty-four".