210123212313 has 8 divisors (see below), whose sum is σ = 320187752128. Its totient is φ = 120070407024.

The previous prime is 210123212239. The next prime is 210123212329. The reversal of 210123212313 is 313212321012.

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

It is not a de Polignac number, because 210123212313 - 2¹⁰ = 210123211289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10005867253 = 210123212313 / (2 + 1 + 0 + 1 + 2 + 3 + 2 + 1 + 2 + 3 + 1 + 3).

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 210123212313.

It is not an unprimeable number, because it can be changed into a prime (210123212333) 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, 5002933606 + ... + 5002933647.

It is an arithmetic number, because the mean of its divisors is an integer number (40023469016).

Almost surely, 2^210123212313 is an apocalyptic number.

It is an amenable number.

210123212313 is a deficient number, since it is larger than the sum of its proper divisors (110064539815).

210123212313 is a wasteful number, since it uses less digits than its factorization.

210123212313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10005867263.

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

Adding to 210123212313 its reverse (313212321012), we get a palindrome (523335533325).

The spelling of 210123212313 in words is "two hundred ten billion, one hundred twenty-three million, two hundred twelve thousand, three hundred thirteen".