212303465 has 16 divisors (see below), whose sum is σ = 283841280. Its totient is φ = 151115520.

The previous prime is 212303449. The next prime is 212303477. The reversal of 212303465 is 564303212.

It is not a de Polignac number, because 212303465 - 2⁴ = 212303449 is a prime.

It is a super-2 number, since 2×212303465² = 90145522502012450, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 38480 + ... + 43649.

It is an arithmetic number, because the mean of its divisors is an integer number (17740080).

Almost surely, 2^212303465 is an apocalyptic number.

It is an amenable number.

212303465 is a deficient number, since it is larger than the sum of its proper divisors (71537815).

212303465 is a wasteful number, since it uses less digits than its factorization.

212303465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82192.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 212303465 is about 14570.6370828458. The cubic root of 212303465 is about 596.5575696349.

Adding to 212303465 its reverse (564303212), we get a palindrome (776606677).

The spelling of 212303465 in words is "two hundred twelve million, three hundred three thousand, four hundred sixty-five".