203131334105321 has 8 divisors (see below), whose sum is σ = 203253827181960. Its totient is φ = 203008851030528.

The previous prime is 203131334105267. The next prime is 203131334105429. The reversal of 203131334105321 is 123501433131302.

203131334105321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 151546834510096 + 51584499595225 = 12310436^2 + 7182235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203131334105321 - 2⁶ = 203131334105257 is a prime.

It is a super-4 number, since 4×203131334105321⁴ (a number of 58 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203131333105321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38331455 + ... + 43307771.

It is an arithmetic number, because the mean of its divisors is an integer number (25406728397745).

Almost surely, 2^{203131334105321} is an apocalyptic number.

It is an amenable number.

203131334105321 is a deficient number, since it is larger than the sum of its proper divisors (122493076639).

203131334105321 is a wasteful number, since it uses less digits than its factorization.

203131334105321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000923.

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 203131334105321 its reverse (123501433131302), we get a palindrome (326632767236623).

The spelling of 203131334105321 in words is "two hundred three trillion, one hundred thirty-one billion, three hundred thirty-four million, one hundred five thousand, three hundred twenty-one".