203512215235340 has 192 divisors, whose sum is σ = 478837559370240. Its totient is φ = 72029207040000.

The previous prime is 203512215235331. The next prime is 203512215235403. The reversal of 203512215235340 is 43532512215302.

It is a junction number, because it is equal to n+sod(n) for n = 203512215235294 and 203512215235303.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1380128615 + ... + 1380276065.

It is an arithmetic number, because the mean of its divisors is an integer number (2493945621720).

Almost surely, 2^{203512215235340} is an apocalyptic number.

203512215235340 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 203512215235340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239418779685120).

203512215235340 is an abundant number, since it is smaller than the sum of its proper divisors (275325344134900).

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

203512215235340 is a wasteful number, since it uses less digits than its factorization.

203512215235340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148584 (or 148582 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 203512215235340 in words is "two hundred three trillion, five hundred twelve billion, two hundred fifteen million, two hundred thirty-five thousand, three hundred forty".