210312120330 has 160 divisors (see below), whose sum is σ = 610465817808. Its totient is φ = 51645081600.

The previous prime is 210312120301. The next prime is 210312120353. The reversal of 210312120330 is 33021213012.

210312120330 is a `hidden beast` number, since 2 + 1 + 0 + 312 + 1 + 20 + 330 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 2192767929 + 208119352401 = 46827^2 + 456201^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4409410 + ... + 4456850.

Almost surely, 2^210312120330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210312120330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305232908904).

210312120330 is an abundant number, since it is smaller than the sum of its proper divisors (400153697478).

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

210312120330 is a wasteful number, since it uses less digits than its factorization.

210312120330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47894 (or 47885 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 210312120330 its reverse (33021213012), we get a palindrome (243333333342).

The spelling of 210312120330 in words is "two hundred ten billion, three hundred twelve million, one hundred twenty thousand, three hundred thirty".