355123313 has 2 divisors, whose sum is σ = 355123314. Its totient is φ = 355123312.

The previous prime is 355123277. The next prime is 355123331. The reversal of 355123313 is 313321553.

Together with next prime (355123331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351075169 + 4048144 = 18737^2 + 2012^2 .

It is an emirp because it is prime and its reverse (313321553) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 355123313 - 2¹⁴ = 355106929 is a prime.

It is a super-2 number, since 2×355123313² = 252225134872191938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (355123333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177561656 + 177561657.

It is an arithmetic number, because the mean of its divisors is an integer number (177561657).

Almost surely, 2^355123313 is an apocalyptic number.

It is an amenable number.

355123313 is a deficient number, since it is larger than the sum of its proper divisors (1).

355123313 is an equidigital number, since it uses as much as digits as its factorization.

355123313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4050, while the sum is 26.

The square root of 355123313 is about 18844.7157845376. The cubic root of 355123313 is about 708.1518508011.

Adding to 355123313 its reverse (313321553), we get a palindrome (668444866).

The spelling of 355123313 in words is "three hundred fifty-five million, one hundred twenty-three thousand, three hundred thirteen".