212103030 has 32 divisors (see below), whose sum is σ = 514094688. Its totient is φ = 56000000.

The previous prime is 212103011. The next prime is 212103037. The reversal of 212103030 is 30301212.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212102997 and 212103015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212103037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31971 + ... + 38030.

It is an arithmetic number, because the mean of its divisors is an integer number (16065459).

Almost surely, 2^212103030 is an apocalyptic number.

212103030 is an abundant number, since it is smaller than the sum of its proper divisors (301991658).

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

212103030 is a wasteful number, since it uses less digits than its factorization.

212103030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70112.

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

The square root of 212103030 is about 14563.7574135248. The cubic root of 212103030 is about 596.3697745132.

Adding to 212103030 its reverse (30301212), we get a palindrome (242404242).

The spelling of 212103030 in words is "two hundred twelve million, one hundred three thousand, thirty".