212530003 has 8 divisors (see below), whose sum is σ = 247848800. Its totient is φ = 182168280.

The previous prime is 212529973. The next prime is 212530013. The reversal of 212530003 is 300035212.

It is a de Polignac number, because none of the positive numbers 2^k-212530003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212530013) 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, 309468 + ... + 310153.

It is an arithmetic number, because the mean of its divisors is an integer number (30981100).

Almost surely, 2^212530003 is an apocalyptic number.

212530003 is a deficient number, since it is larger than the sum of its proper divisors (35318797).

212530003 is an frugal number, since it uses more digits than its factorization.

212530003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619642 (or 619628 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 212530003 is about 14578.4087952012. The cubic root of 212530003 is about 596.7696794077.

Adding to 212530003 its reverse (300035212), we get a palindrome (512565215).

The spelling of 212530003 in words is "two hundred twelve million, five hundred thirty thousand, three".