340013857 has 4 divisors (see below), whose sum is σ = 347921200. Its totient is φ = 332106516.

The previous prime is 340013833. The next prime is 340013879. The reversal of 340013857 is 758310043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340013857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340013897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3953607 + ... + 3953692.

It is an arithmetic number, because the mean of its divisors is an integer number (86980300).

Almost surely, 2^340013857 is an apocalyptic number.

It is an amenable number.

340013857 is a deficient number, since it is larger than the sum of its proper divisors (7907343).

340013857 is an equidigital number, since it uses as much as digits as its factorization.

340013857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7907342.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 340013857 is about 18439.4646614266. The cubic root of 340013857 is about 697.9626864616.

The spelling of 340013857 in words is "three hundred forty million, thirteen thousand, eight hundred fifty-seven".