340413503 has 2 divisors, whose sum is σ = 340413504. Its totient is φ = 340413502.

The previous prime is 340413427. The next prime is 340413509. The reversal of 340413503 is 305314043.

It is a strong prime.

It is an emirp because it is prime and its reverse (305314043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340413503 - 2²⁶ = 273304639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340413509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170206751 + 170206752.

It is an arithmetic number, because the mean of its divisors is an integer number (170206752).

Almost surely, 2^340413503 is an apocalyptic number.

340413503 is a deficient number, since it is larger than the sum of its proper divisors (1).

340413503 is an equidigital number, since it uses as much as digits as its factorization.

340413503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 340413503 is about 18450.2981818723. The cubic root of 340413503 is about 698.2360368709.

Adding to 340413503 its reverse (305314043), we get a palindrome (645727546).

The spelling of 340413503 in words is "three hundred forty million, four hundred thirteen thousand, five hundred three".