305741 has 2 divisors, whose sum is σ = 305742. Its totient is φ = 305740.

The previous prime is 305719. The next prime is 305743. The reversal of 305741 is 147503.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168100 + 137641 = 410^2 + 371^2 .

It is an emirp because it is prime and its reverse (147503) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 305741 - 2¹⁸ = 43597 is a prime.

It is a Sophie Germain prime.

Together with 305743, it forms a pair of twin primes.

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 (305743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152870 + 152871.

It is an arithmetic number, because the mean of its divisors is an integer number (152871).

2³⁰⁵⁷⁴¹ is an apocalyptic number.

It is an amenable number.

305741 is a deficient number, since it is larger than the sum of its proper divisors (1).

305741 is an equidigital number, since it uses as much as digits as its factorization.

305741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 305741 is about 552.9385137608. The cubic root of 305741 is about 67.3676235064.

The spelling of 305741 in words is "three hundred five thousand, seven hundred forty-one".