343521149 has 2 divisors, whose sum is σ = 343521150. Its totient is φ = 343521148.

The previous prime is 343521133. The next prime is 343521173. The reversal of 343521149 is 941125343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315240025 + 28281124 = 17755^2 + 5318^2 .

It is a cyclic number.

It is not a de Polignac number, because 343521149 - 2⁴ = 343521133 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 (343521119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171760574 + 171760575.

It is an arithmetic number, because the mean of its divisors is an integer number (171760575).

Almost surely, 2^343521149 is an apocalyptic number.

It is an amenable number.

343521149 is a deficient number, since it is larger than the sum of its proper divisors (1).

343521149 is an equidigital number, since it uses as much as digits as its factorization.

343521149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 32.

The square root of 343521149 is about 18534.3235376962. The cubic root of 343521149 is about 700.3543437283.

The spelling of 343521149 in words is "three hundred forty-three million, five hundred twenty-one thousand, one hundred forty-nine".