212231030 has 32 divisors (see below), whose sum is σ = 419433120. Its totient is φ = 76677120.

The previous prime is 212231023. The next prime is 212231059. The reversal of 212231030 is 30132212.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212230996 and 212231014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11126 + ... + 23414.

It is an arithmetic number, because the mean of its divisors is an integer number (13107285).

Almost surely, 2^212231030 is an apocalyptic number.

212231030 is a deficient number, since it is larger than the sum of its proper divisors (207202090).

212231030 is a wasteful number, since it uses less digits than its factorization.

212231030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12464.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 212231030 is about 14568.1512210713. The cubic root of 212231030 is about 596.4897161923.

Adding to 212231030 its reverse (30132212), we get a palindrome (242363242).

The spelling of 212231030 in words is "two hundred twelve million, two hundred thirty-one thousand, thirty".