214319621 has 2 divisors, whose sum is σ = 214319622. Its totient is φ = 214319620.

The previous prime is 214319603. The next prime is 214319659. The reversal of 214319621 is 126913412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202492900 + 11826721 = 14230^2 + 3439^2 .

It is a cyclic number.

It is not a de Polignac number, because 214319621 - 2⁶ = 214319557 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214319821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107159810 + 107159811.

It is an arithmetic number, because the mean of its divisors is an integer number (107159811).

Almost surely, 2^214319621 is an apocalyptic number.

It is an amenable number.

214319621 is a deficient number, since it is larger than the sum of its proper divisors (1).

214319621 is an equidigital number, since it uses as much as digits as its factorization.

214319621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 214319621 is about 14639.6591831914. The cubic root of 214319621 is about 598.4400412479.

The spelling of 214319621 in words is "two hundred fourteen million, three hundred nineteen thousand, six hundred twenty-one".