201421343 has 2 divisors, whose sum is σ = 201421344. Its totient is φ = 201421342.

The previous prime is 201421309. The next prime is 201421351. The reversal of 201421343 is 343124102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201421343 - 2⁶ = 201421279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201421393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100710671 + 100710672.

It is an arithmetic number, because the mean of its divisors is an integer number (100710672).

Almost surely, 2^201421343 is an apocalyptic number.

201421343 is a deficient number, since it is larger than the sum of its proper divisors (1).

201421343 is an equidigital number, since it uses as much as digits as its factorization.

201421343 is an evil number, because the sum of its binary digits is even.

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

The square root of 201421343 is about 14192.2987214898. The cubic root of 201421343 is about 586.1856228380.

Adding to 201421343 its reverse (343124102), we get a palindrome (544545445).

The spelling of 201421343 in words is "two hundred one million, four hundred twenty-one thousand, three hundred forty-three".