210131303321 has 8 divisors (see below), whose sum is σ = 210826137480. Its totient is φ = 209436619392.

The previous prime is 210131303227. The next prime is 210131303353. The reversal of 210131303321 is 123303131012.

It can be written as a sum of positive squares in 4 ways, for example, as 56615443600 + 153515859721 = 237940^2 + 391811^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210131303321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210131303293 and 210131303302.

It is not an unprimeable number, because it can be changed into a prime (210131309321) 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, 3232091 + ... + 3296463.

It is an arithmetic number, because the mean of its divisors is an integer number (26353267185).

Almost surely, 2^210131303321 is an apocalyptic number.

It is an amenable number.

210131303321 is a deficient number, since it is larger than the sum of its proper divisors (694834159).

210131303321 is a wasteful number, since it uses less digits than its factorization.

210131303321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75115.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 210131303321 its reverse (123303131012), we get a palindrome (333434434333).

The spelling of 210131303321 in words is "two hundred ten billion, one hundred thirty-one million, three hundred three thousand, three hundred twenty-one".