345311 has 2 divisors, whose sum is σ = 345312. Its totient is φ = 345310.

The previous prime is 345307. The next prime is 345329. The reversal of 345311 is 113543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345311 - 2² = 345307 is a prime.

It is a Chen prime.

It is a plaindrome in base 6 and base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 345311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345011) 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 as a sum of consecutive naturals, namely, 172655 + 172656.

It is an arithmetic number, because the mean of its divisors is an integer number (172656).

2³⁴⁵³¹¹ is an apocalyptic number.

345311 is a deficient number, since it is larger than the sum of its proper divisors (1).

345311 is an equidigital number, since it uses as much as digits as its factorization.

345311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 17.

The square root of 345311 is about 587.6316873689. The cubic root of 345311 is about 70.1568591249.

Adding to 345311 its reverse (113543), we get a palindrome (458854).

It can be divided in two parts, 345 and 311, that added together give a palindrome (656).

The spelling of 345311 in words is "three hundred forty-five thousand, three hundred eleven".