340537843 has 2 divisors, whose sum is σ = 340537844. Its totient is φ = 340537842.

The previous prime is 340537837. The next prime is 340537891. The reversal of 340537843 is 348735043.

It is a weak prime.

It is an emirp because it is prime and its reverse (348735043) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340537843 is a prime.

It is not a weakly prime, because it can be changed into another prime (340537823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170268921 + 170268922.

It is an arithmetic number, because the mean of its divisors is an integer number (170268922).

Almost surely, 2^340537843 is an apocalyptic number.

340537843 is a deficient number, since it is larger than the sum of its proper divisors (1).

340537843 is an equidigital number, since it uses as much as digits as its factorization.

340537843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 340537843 is about 18453.6674674711. The cubic root of 340537843 is about 698.3210394728.

The spelling of 340537843 in words is "three hundred forty million, five hundred thirty-seven thousand, eight hundred forty-three".