343521133 has 2 divisors, whose sum is σ = 343521134. Its totient is φ = 343521132.

The previous prime is 343521131. The next prime is 343521149. The reversal of 343521133 is 331125343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274664329 + 68856804 = 16573^2 + 8298^2 .

It is an emirp because it is prime and its reverse (331125343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343521133 - 2¹ = 343521131 is a prime.

Together with 343521131, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 343521098 and 343521107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343521131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171760566 + 171760567.

It is an arithmetic number, because the mean of its divisors is an integer number (171760567).

Almost surely, 2^343521133 is an apocalyptic number.

It is an amenable number.

343521133 is a deficient number, since it is larger than the sum of its proper divisors (1).

343521133 is an equidigital number, since it uses as much as digits as its factorization.

343521133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 25.

The square root of 343521133 is about 18534.3231060646. The cubic root of 343521133 is about 700.3543328550.

Adding to 343521133 its reverse (331125343), we get a palindrome (674646476).

The spelling of 343521133 in words is "three hundred forty-three million, five hundred twenty-one thousand, one hundred thirty-three".