355021313 has 2 divisors, whose sum is σ = 355021314. Its totient is φ = 355021312.

The previous prime is 355021309. The next prime is 355021343. The reversal of 355021313 is 313120553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 353891344 + 1129969 = 18812^2 + 1063^2 .

It is a cyclic number.

It is not a de Polignac number, because 355021313 - 2² = 355021309 is a prime.

It is not a weakly prime, because it can be changed into another prime (355021343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177510656 + 177510657.

It is an arithmetic number, because the mean of its divisors is an integer number (177510657).

Almost surely, 2^355021313 is an apocalyptic number.

It is an amenable number.

355021313 is a deficient number, since it is larger than the sum of its proper divisors (1).

355021313 is an equidigital number, since it uses as much as digits as its factorization.

355021313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 355021313 is about 18842.0092612226. The cubic root of 355021313 is about 708.0840448655.

Adding to 355021313 its reverse (313120553), we get a palindrome (668141866).

The spelling of 355021313 in words is "three hundred fifty-five million, twenty-one thousand, three hundred thirteen".