212310530 has 16 divisors (see below), whose sum is σ = 384692544. Its totient is φ = 84361200.

The previous prime is 212310509. The next prime is 212310533. The reversal of 212310530 is 35013212.

It is a super-2 number, since 2×212310530² = 90151522297761800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212310499 and 212310508.

It is not an unprimeable number, because it can be changed into a prime (212310533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68792 + ... + 71811.

It is an arithmetic number, because the mean of its divisors is an integer number (24043284).

Almost surely, 2^212310530 is an apocalyptic number.

212310530 is a deficient number, since it is larger than the sum of its proper divisors (172382014).

212310530 is a wasteful number, since it uses less digits than its factorization.

212310530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140761.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 212310530 is about 14570.8795204682. The cubic root of 212310530 is about 596.5641869432.

Adding to 212310530 its reverse (35013212), we get a palindrome (247323742).

The spelling of 212310530 in words is "two hundred twelve million, three hundred ten thousand, five hundred thirty".