345023311 has 2 divisors, whose sum is σ = 345023312. Its totient is φ = 345023310.

The previous prime is 345023309. The next prime is 345023317. The reversal of 345023311 is 113320543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345023311 - 2¹ = 345023309 is a prime.

Together with 345023309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345023317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172511655 + 172511656.

It is an arithmetic number, because the mean of its divisors is an integer number (172511656).

Almost surely, 2^345023311 is an apocalyptic number.

345023311 is a deficient number, since it is larger than the sum of its proper divisors (1).

345023311 is an equidigital number, since it uses as much as digits as its factorization.

345023311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 345023311 is about 18574.8031214331. The cubic root of 345023311 is about 701.3737044717.

Adding to 345023311 its reverse (113320543), we get a palindrome (458343854).

The spelling of 345023311 in words is "three hundred forty-five million, twenty-three thousand, three hundred eleven".