340123311 has 12 divisors (see below), whose sum is σ = 535952040. Its totient is φ = 206135280.

The previous prime is 340123307. The next prime is 340123319. The reversal of 340123311 is 113321043.

340123311 is a `hidden beast` number, since 340 + 12 + 3 + 311 = 666.

It is not a de Polignac number, because 340123311 - 2² = 340123307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340123319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1717696 + ... + 1717893.

It is an arithmetic number, because the mean of its divisors is an integer number (44662670).

Almost surely, 2^340123311 is an apocalyptic number.

340123311 is a deficient number, since it is larger than the sum of its proper divisors (195828729).

340123311 is a wasteful number, since it uses less digits than its factorization.

340123311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3435606 (or 3435603 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 340123311 is about 18442.4323504249. The cubic root of 340123311 is about 698.0375722448.

Adding to 340123311 its reverse (113321043), we get a palindrome (453444354).

The spelling of 340123311 in words is "three hundred forty million, one hundred twenty-three thousand, three hundred eleven".