203313030120321 has 48 divisors (see below), whose sum is σ = 310625643062784. Its totient is φ = 118064532960000.

The previous prime is 203313030120313. The next prime is 203313030120373. The reversal of 203313030120321 is 123021030313302.

It is not a de Polignac number, because 203313030120321 - 2³ = 203313030120313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203313030120291 and 203313030120300.

It is not an unprimeable number, because it can be changed into a prime (203313030125321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88306276 + ... + 90579381.

It is an arithmetic number, because the mean of its divisors is an integer number (6471367563808).

Almost surely, 2^{203313030120321} is an apocalyptic number.

It is an amenable number.

203313030120321 is a deficient number, since it is larger than the sum of its proper divisors (107312612942463).

203313030120321 is a wasteful number, since it uses less digits than its factorization.

203313030120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178885814 (or 178885803 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 203313030120321 its reverse (123021030313302), we get a palindrome (326334060433623).

The spelling of 203313030120321 in words is "two hundred three trillion, three hundred thirteen billion, thirty million, one hundred twenty thousand, three hundred twenty-one".