210231321123 has 8 divisors (see below), whose sum is σ = 280351229968. Its totient is φ = 140132813184.

The previous prime is 210231321109. The next prime is 210231321127. The reversal of 210231321123 is 321123132012.

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

It is not a de Polignac number, because 210231321123 - 2⁶ = 210231321059 is a prime.

It is a super-2 number, since 2×210231321123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210231321123.

It is not an unprimeable number, because it can be changed into a prime (210231321127) 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, 5327290 + ... + 5366607.

It is an arithmetic number, because the mean of its divisors is an integer number (35043903746).

Almost surely, 2^210231321123 is an apocalyptic number.

210231321123 is a deficient number, since it is larger than the sum of its proper divisors (70119908845).

210231321123 is a wasteful number, since it uses less digits than its factorization.

210231321123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10700453.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 210231321123 its reverse (321123132012), we get a palindrome (531354453135).

The spelling of 210231321123 in words is "two hundred ten billion, two hundred thirty-one million, three hundred twenty-one thousand, one hundred twenty-three".