355120243 has 2 divisors, whose sum is σ = 355120244. Its totient is φ = 355120242.

The previous prime is 355120237. The next prime is 355120289. The reversal of 355120243 is 342021553.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 355120243 - 2⁵ = 355120211 is a prime.

It is a super-2 number, since 2×355120243² = 252220773976758098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (355120543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177560121 + 177560122.

It is an arithmetic number, because the mean of its divisors is an integer number (177560122).

Almost surely, 2^355120243 is an apocalyptic number.

355120243 is a deficient number, since it is larger than the sum of its proper divisors (1).

355120243 is an equidigital number, since it uses as much as digits as its factorization.

355120243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 355120243 is about 18844.6343291665. The cubic root of 355120243 is about 708.1498101649.

Adding to 355120243 its reverse (342021553), we get a palindrome (697141796).

The spelling of 355120243 in words is "three hundred fifty-five million, one hundred twenty thousand, two hundred forty-three".