203155335340 has 12 divisors (see below), whose sum is σ = 426626204256. Its totient is φ = 81262134128.

The previous prime is 203155335337. The next prime is 203155335347. The reversal of 203155335340 is 43533551302.

It is a junction number, because it is equal to n+sod(n) for n = 203155335296 and 203155335305.

It is not an unprimeable number, because it can be changed into a prime (203155335347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5078883364 + ... + 5078883403.

It is an arithmetic number, because the mean of its divisors is an integer number (35552183688).

Almost surely, 2^203155335340 is an apocalyptic number.

203155335340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203155335340 is an abundant number, since it is smaller than the sum of its proper divisors (223470868916).

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

203155335340 is a wasteful number, since it uses less digits than its factorization.

203155335340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10157766776 (or 10157766774 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 34.

Adding to 203155335340 its reverse (43533551302), we get a palindrome (246688886642).

The spelling of 203155335340 in words is "two hundred three billion, one hundred fifty-five million, three hundred thirty-five thousand, three hundred forty".