210131313321 has 4 divisors (see below), whose sum is σ = 280175084432. Its totient is φ = 140087542212.

The previous prime is 210131313307. The next prime is 210131313331. The reversal of 210131313321 is 123313131012.

It is a happy number.

210131313321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 210131313321 - 2⁵ = 210131313289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210131313331) 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 3 ways as a sum of consecutive naturals, for example, 35021885551 + ... + 35021885556.

It is an arithmetic number, because the mean of its divisors is an integer number (70043771108).

Almost surely, 2^210131313321 is an apocalyptic number.

It is an amenable number.

210131313321 is a deficient number, since it is larger than the sum of its proper divisors (70043771111).

210131313321 is an equidigital number, since it uses as much as digits as its factorization.

210131313321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70043771110.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 210131313321 its reverse (123313131012), we get a palindrome (333444444333).

The spelling of 210131313321 in words is "two hundred ten billion, one hundred thirty-one million, three hundred thirteen thousand, three hundred twenty-one".