212303245 has 32 divisors (see below), whose sum is σ = 334356480. Its totient is φ = 125375040.

The previous prime is 212303243. The next prime is 212303269. The reversal of 212303245 is 542303212.

It is not a de Polignac number, because 212303245 - 2¹ = 212303243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212303243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7197 + ... + 21826.

It is an arithmetic number, because the mean of its divisors is an integer number (10448640).

Almost surely, 2^212303245 is an apocalyptic number.

It is an amenable number.

212303245 is a deficient number, since it is larger than the sum of its proper divisors (122053235).

212303245 is a wasteful number, since it uses less digits than its factorization.

212303245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29065.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 212303245 is about 14570.6295334141. The cubic root of 212303245 is about 596.5573635734.

Adding to 212303245 its reverse (542303212), we get a palindrome (754606457).

The spelling of 212303245 in words is "two hundred twelve million, three hundred three thousand, two hundred forty-five".