343573861 has 2 divisors, whose sum is σ = 343573862. Its totient is φ = 343573860.

The previous prime is 343573801. The next prime is 343573873. The reversal of 343573861 is 168375343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266309761 + 77264100 = 16319^2 + 8790^2 .

It is an emirp because it is prime and its reverse (168375343) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343573861 is a prime.

It is a Chen prime.

It is equal to p_18476680 and since 343573861 and 18476680 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343573801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171786930 + 171786931.

It is an arithmetic number, because the mean of its divisors is an integer number (171786931).

Almost surely, 2^343573861 is an apocalyptic number.

It is an amenable number.

343573861 is a deficient number, since it is larger than the sum of its proper divisors (1).

343573861 is an equidigital number, since it uses as much as digits as its factorization.

343573861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 40.

The square root of 343573861 is about 18535.7454935052. The cubic root of 343573861 is about 700.3901641236.

The spelling of 343573861 in words is "three hundred forty-three million, five hundred seventy-three thousand, eight hundred sixty-one".