305240471 has 2 divisors, whose sum is σ = 305240472. Its totient is φ = 305240470.

The previous prime is 305240443. The next prime is 305240489. The reversal of 305240471 is 174042503.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 305240471 - 2¹⁰ = 305239447 is a prime.

It is a super-3 number, since 3×305240471³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 305240471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305240071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152620235 + 152620236.

It is an arithmetic number, because the mean of its divisors is an integer number (152620236).

Almost surely, 2^305240471 is an apocalyptic number.

305240471 is a deficient number, since it is larger than the sum of its proper divisors (1).

305240471 is an equidigital number, since it uses as much as digits as its factorization.

305240471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 305240471 is about 17471.1325047920. The cubic root of 305240471 is about 673.3084088466.

Adding to 305240471 its reverse (174042503), we get a palindrome (479282974).

The spelling of 305240471 in words is "three hundred five million, two hundred forty thousand, four hundred seventy-one".