30240473 has 2 divisors, whose sum is σ = 30240474. Its totient is φ = 30240472.

The previous prime is 30240449. The next prime is 30240499. The reversal of 30240473 is 37404203.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29246464 + 994009 = 5408^2 + 997^2 .

It is an emirp because it is prime and its reverse (37404203) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30240473 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30240443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15120236 + 15120237.

It is an arithmetic number, because the mean of its divisors is an integer number (15120237).

Almost surely, 2^30240473 is an apocalyptic number.

It is an amenable number.

30240473 is a deficient number, since it is larger than the sum of its proper divisors (1).

30240473 is an equidigital number, since it uses as much as digits as its factorization.

30240473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 30240473 is about 5499.1338408880. The cubic root of 30240473 is about 311.5512704741.

Adding to 30240473 its reverse (37404203), we get a palindrome (67644676).

The spelling of 30240473 in words is "thirty million, two hundred forty thousand, four hundred seventy-three".