211230030 has 128 divisors (see below), whose sum is σ = 593049600. Its totient is φ = 47606400.

The previous prime is 211230023. The next prime is 211230037. The reversal of 211230030 is 30032112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (211230023) and next prime (211230037).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211229988 and 211230015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211230037) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 369645 + ... + 370215.

It is an arithmetic number, because the mean of its divisors is an integer number (4633200).

Almost surely, 2^211230030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211230030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296524800).

211230030 is an abundant number, since it is smaller than the sum of its proper divisors (381819570).

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

211230030 is a wasteful number, since it uses less digits than its factorization.

211230030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 211230030 is about 14533.7548486274. The cubic root of 211230030 is about 595.5504451158.

Adding to 211230030 its reverse (30032112), we get a palindrome (241262142).

The spelling of 211230030 in words is "two hundred eleven million, two hundred thirty thousand, thirty".