210312312 has 96 divisors (see below), whose sum is σ = 625996800. Its totient is φ = 58677696.

The previous prime is 210312283. The next prime is 210312313. The reversal of 210312312 is 213213012.

It is a junction number, because it is equal to n+sod(n) for n = 210312291 and 210312300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210312313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48489 + ... + 52647.

It is an arithmetic number, because the mean of its divisors is an integer number (6520800).

Almost surely, 2^210312312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210312312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312998400).

210312312 is an abundant number, since it is smaller than the sum of its proper divisors (415684488).

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

210312312 is a wasteful number, since it uses less digits than its factorization.

210312312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225 (or 4214 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 210312312 is about 14502.1485304764. The cubic root of 210312312 is about 594.6867093484.

Adding to 210312312 its reverse (213213012), we get a palindrome (423525324).

The spelling of 210312312 in words is "two hundred ten million, three hundred twelve thousand, three hundred twelve".