427130813 has 2 divisors, whose sum is σ = 427130814. Its totient is φ = 427130812.

The previous prime is 427130761. The next prime is 427130827. The reversal of 427130813 is 318031724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313537849 + 113592964 = 17707^2 + 10658^2 .

It is a cyclic number.

It is not a de Polignac number, because 427130813 - 2⁶ = 427130749 is a prime.

It is a super-3 number, since 3×427130813³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427130833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213565406 + 213565407.

It is an arithmetic number, because the mean of its divisors is an integer number (213565407).

Almost surely, 2^427130813 is an apocalyptic number.

It is an amenable number.

427130813 is a deficient number, since it is larger than the sum of its proper divisors (1).

427130813 is an equidigital number, since it uses as much as digits as its factorization.

427130813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 427130813 is about 20667.1433197721. The cubic root of 427130813 is about 753.1017106897.

The spelling of 427130813 in words is "four hundred twenty-seven million, one hundred thirty thousand, eight hundred thirteen".