430640813 has 2 divisors, whose sum is σ = 430640814. Its totient is φ = 430640812.

The previous prime is 430640783. The next prime is 430640827. The reversal of 430640813 is 318046034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 304258249 + 126382564 = 17443^2 + 11242^2 .

It is a cyclic number.

It is not a de Polignac number, because 430640813 - 2¹⁰ = 430639789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (430640893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215320406 + 215320407.

It is an arithmetic number, because the mean of its divisors is an integer number (215320407).

Almost surely, 2^430640813 is an apocalyptic number.

It is an amenable number.

430640813 is a deficient number, since it is larger than the sum of its proper divisors (1).

430640813 is an equidigital number, since it uses as much as digits as its factorization.

430640813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 430640813 is about 20751.8869744416. The cubic root of 430640813 is about 755.1589876137.

Adding to 430640813 its reverse (318046034), we get a palindrome (748686847).

The spelling of 430640813 in words is "four hundred thirty million, six hundred forty thousand, eight hundred thirteen".