210123113208 has 16 divisors (see below), whose sum is σ = 525307783080. Its totient is φ = 70041037728.

The previous prime is 210123113177. The next prime is 210123113219. The reversal of 210123113208 is 802311321012.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 8755129717 = 210123113208 / (2 + 1 + 0 + 1 + 2 + 3 + 1 + 1 + 3 + 2 + 0 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4377564835 + ... + 4377564882.

Almost surely, 2^210123113208 is an apocalyptic number.

It is an amenable number.

210123113208 is an abundant number, since it is smaller than the sum of its proper divisors (315184669872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210123113208 is a wasteful number, since it uses less digits than its factorization.

210123113208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8755129726 (or 8755129722 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 210123113208 in words is "two hundred ten billion, one hundred twenty-three million, one hundred thirteen thousand, two hundred eight".