212404313 has 16 divisors (see below), whose sum is σ = 239766912. Its totient is φ = 186480000.

The previous prime is 212404303. The next prime is 212404349. The reversal of 212404313 is 313404212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212404313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212404303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43220 + ... + 47882.

It is an arithmetic number, because the mean of its divisors is an integer number (14985432).

Almost surely, 2^212404313 is an apocalyptic number.

It is an amenable number.

212404313 is a deficient number, since it is larger than the sum of its proper divisors (27362599).

212404313 is a wasteful number, since it uses less digits than its factorization.

212404313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4816.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 212404313 is about 14574.0973305382. The cubic root of 212404313 is about 596.6520132408.

Adding to 212404313 its reverse (313404212), we get a palindrome (525808525).

The spelling of 212404313 in words is "two hundred twelve million, four hundred four thousand, three hundred thirteen".