340355903 has 2 divisors, whose sum is σ = 340355904. Its totient is φ = 340355902.

The previous prime is 340355881. The next prime is 340355921. The reversal of 340355903 is 309553043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340355903 - 2⁸ = 340355647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340355903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340351903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170177951 + 170177952.

It is an arithmetic number, because the mean of its divisors is an integer number (170177952).

Almost surely, 2^340355903 is an apocalyptic number.

340355903 is a deficient number, since it is larger than the sum of its proper divisors (1).

340355903 is an equidigital number, since it uses as much as digits as its factorization.

340355903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 32.

The square root of 340355903 is about 18448.7371654539. The cubic root of 340355903 is about 698.1966527455.

The spelling of 340355903 in words is "three hundred forty million, three hundred fifty-five thousand, nine hundred three".