210131002123 has 8 divisors (see below), whose sum is σ = 240156462848. Its totient is φ = 180107227944.

The previous prime is 210131002099. The next prime is 210131002129. The reversal of 210131002123 is 321200131012.

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

It is not a de Polignac number, because 210131002123 - 2⁵ = 210131002091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210131002097 and 210131002106.

It is not an unprimeable number, because it can be changed into a prime (210131002129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142311 + ... + 663712.

It is an arithmetic number, because the mean of its divisors is an integer number (30019557856).

Almost surely, 2^210131002123 is an apocalyptic number.

210131002123 is a deficient number, since it is larger than the sum of its proper divisors (30025460725).

210131002123 is an equidigital number, since it uses as much as digits as its factorization.

210131002123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843273.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 210131002123 its reverse (321200131012), we get a palindrome (531331133135).

The spelling of 210131002123 in words is "two hundred ten billion, one hundred thirty-one million, two thousand, one hundred twenty-three".