340012505 has 16 divisors (see below), whose sum is σ = 490846080. Its totient is φ = 220879872.

The previous prime is 340012483. The next prime is 340012511. The reversal of 340012505 is 505210043.

It is a cyclic number.

It is not a de Polignac number, because 340012505 - 2⁸ = 340012249 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 254984 + ... + 256313.

It is an arithmetic number, because the mean of its divisors is an integer number (30677880).

Almost surely, 2^340012505 is an apocalyptic number.

340012505 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

340012505 is a deficient number, since it is larger than the sum of its proper divisors (150833575).

340012505 is a wasteful number, since it uses less digits than its factorization.

340012505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511328.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 340012505 is about 18439.4280008898. The cubic root of 340012505 is about 697.9617613554.

Adding to 340012505 its reverse (505210043), we get a palindrome (845222548).

The spelling of 340012505 in words is "three hundred forty million, twelve thousand, five hundred five".