345243311 has 16 divisors (see below), whose sum is σ = 411125760. Its totient is φ = 283681440.

The previous prime is 345243299. The next prime is 345243313. The reversal of 345243311 is 113342543.

It is not a de Polignac number, because 345243311 - 2¹⁴ = 345226927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345243313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15785 + ... + 30653.

It is an arithmetic number, because the mean of its divisors is an integer number (25695360).

Almost surely, 2^345243311 is an apocalyptic number.

345243311 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

345243311 is a deficient number, since it is larger than the sum of its proper divisors (65882449).

345243311 is a wasteful number, since it uses less digits than its factorization.

345243311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15014.

The product of its digits is 4320, while the sum is 26.

The square root of 345243311 is about 18580.7241785674. The cubic root of 345243311 is about 701.5227469908.

Adding to 345243311 its reverse (113342543), we get a palindrome (458585854).

The spelling of 345243311 in words is "three hundred forty-five million, two hundred forty-three thousand, three hundred eleven".