340013885 has 4 divisors (see below), whose sum is σ = 408016668. Its totient is φ = 272011104.

The previous prime is 340013879. The next prime is 340013897. The reversal of 340013885 is 588310043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588310043 = 151 ⋅3896093.

It can be written as a sum of positive squares in 2 ways, for example, as 62758084 + 277255801 = 7922^2 + 16651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340013885 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 34001384 + ... + 34001393.

It is an arithmetic number, because the mean of its divisors is an integer number (102004167).

Almost surely, 2^340013885 is an apocalyptic number.

It is an amenable number.

340013885 is a deficient number, since it is larger than the sum of its proper divisors (68002783).

340013885 is an equidigital number, since it uses as much as digits as its factorization.

340013885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68002782.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 340013885 is about 18439.4654206677. The cubic root of 340013885 is about 697.9627056206.

The spelling of 340013885 in words is "three hundred forty million, thirteen thousand, eight hundred eighty-five".