343580813 has 2 divisors, whose sum is σ = 343580814. Its totient is φ = 343580812.

The previous prime is 343580807. The next prime is 343580869. The reversal of 343580813 is 318085343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295943209 + 47637604 = 17203^2 + 6902^2 .

It is a cyclic number.

It is not a de Polignac number, because 343580813 - 2¹⁸ = 343318669 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343580803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171790406 + 171790407.

It is an arithmetic number, because the mean of its divisors is an integer number (171790407).

Almost surely, 2^343580813 is an apocalyptic number.

It is an amenable number.

343580813 is a deficient number, since it is larger than the sum of its proper divisors (1).

343580813 is an equidigital number, since it uses as much as digits as its factorization.

343580813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 343580813 is about 18535.9330221060. The cubic root of 343580813 is about 700.3948880759.

It can be divided in two parts, 3435 and 80813, that added together give a palindrome (84248).

The spelling of 343580813 in words is "three hundred forty-three million, five hundred eighty thousand, eight hundred thirteen".