340356923 has 2 divisors, whose sum is σ = 340356924. Its totient is φ = 340356922.

The previous prime is 340356917. The next prime is 340356931. The reversal of 340356923 is 329653043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340356923 - 2⁶ = 340356859 is a prime.

It is not a weakly prime, because it can be changed into another prime (340356953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170178461 + 170178462.

It is an arithmetic number, because the mean of its divisors is an integer number (170178462).

Almost surely, 2^340356923 is an apocalyptic number.

340356923 is a deficient number, since it is larger than the sum of its proper divisors (1).

340356923 is an equidigital number, since it uses as much as digits as its factorization.

340356923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 35.

The square root of 340356923 is about 18448.7648096018. The cubic root of 340356923 is about 698.1973502113.

The spelling of 340356923 in words is "three hundred forty million, three hundred fifty-six thousand, nine hundred twenty-three".