340406203 has 2 divisors, whose sum is σ = 340406204. Its totient is φ = 340406202.

The previous prime is 340406177. The next prime is 340406273. The reversal of 340406203 is 302604043.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340406203 is a prime.

It is not a weakly prime, because it can be changed into another prime (340406273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170203101 + 170203102.

It is an arithmetic number, because the mean of its divisors is an integer number (170203102).

Almost surely, 2^340406203 is an apocalyptic number.

340406203 is a deficient number, since it is larger than the sum of its proper divisors (1).

340406203 is an equidigital number, since it uses as much as digits as its factorization.

340406203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 340406203 is about 18450.1003520306. The cubic root of 340406203 is about 698.2310457259.

The spelling of 340406203 in words is "three hundred forty million, four hundred six thousand, two hundred three".