355123 has 4 divisors (see below), whose sum is σ = 356440. Its totient is φ = 353808.

The previous prime is 355111. The next prime is 355127. The reversal of 355123 is 321553.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-355123 is a prime.

It is a super-2 number, since 2×355123² = 252224690258, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 355123.

It is not an unprimeable number, because it can be changed into a prime (355127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90 + ... + 847.

It is an arithmetic number, because the mean of its divisors is an integer number (89110).

2³⁵⁵¹²³ is an apocalyptic number.

355123 is a deficient number, since it is larger than the sum of its proper divisors (1317).

355123 is an equidigital number, since it uses as much as digits as its factorization.

355123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316.

The product of its digits is 450, while the sum is 19.

The square root of 355123 is about 595.9219747584. The cubic root of 355123 is about 70.8151642750.

Adding to 355123 its reverse (321553), we get a palindrome (676676).

The spelling of 355123 in words is "three hundred fifty-five thousand, one hundred twenty-three".