355243117 has 2 divisors, whose sum is σ = 355243118. Its totient is φ = 355243116.

The previous prime is 355243111. The next prime is 355243121. The reversal of 355243117 is 711342553.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228432996 + 126810121 = 15114^2 + 11261^2 .

It is an emirp because it is prime and its reverse (711342553) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 355243117 - 2⁷ = 355242989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355243111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177621558 + 177621559.

It is an arithmetic number, because the mean of its divisors is an integer number (177621559).

Almost surely, 2^355243117 is an apocalyptic number.

It is an amenable number.

355243117 is a deficient number, since it is larger than the sum of its proper divisors (1).

355243117 is an equidigital number, since it uses as much as digits as its factorization.

355243117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 31.

The square root of 355243117 is about 18847.8942325131. The cubic root of 355243117 is about 708.2314756174.

The spelling of 355243117 in words is "three hundred fifty-five million, two hundred forty-three thousand, one hundred seventeen".