212724013 has 2 divisors, whose sum is σ = 212724014. Its totient is φ = 212724012.

The previous prime is 212723999. The next prime is 212724049. The reversal of 212724013 is 310427212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147792649 + 64931364 = 12157^2 + 8058^2 .

It is a cyclic number.

It is not a de Polignac number, because 212724013 - 2⁹ = 212723501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212724313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106362006 + 106362007.

It is an arithmetic number, because the mean of its divisors is an integer number (106362007).

Almost surely, 2^212724013 is an apocalyptic number.

It is an amenable number.

212724013 is a deficient number, since it is larger than the sum of its proper divisors (1).

212724013 is an equidigital number, since it uses as much as digits as its factorization.

212724013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 212724013 is about 14585.0612957231. The cubic root of 212724013 is about 596.9512131075.

The spelling of 212724013 in words is "two hundred twelve million, seven hundred twenty-four thousand, thirteen".