355240340402303 has 2 divisors, whose sum is σ = 355240340402304. Its totient is φ = 355240340402302.

The previous prime is 355240340402293. The next prime is 355240340402341. The reversal of 355240340402303 is 303204043042553.

It is an a-pointer prime, because the next prime (355240340402341) can be obtained adding 355240340402303 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 355240340402303 - 2⁶ = 355240340402239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355240340482303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177620170201151 + 177620170201152.

It is an arithmetic number, because the mean of its divisors is an integer number (177620170201152).

Almost surely, 2^{355240340402303} is an apocalyptic number.

355240340402303 is a deficient number, since it is larger than the sum of its proper divisors (1).

355240340402303 is an equidigital number, since it uses as much as digits as its factorization.

355240340402303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 38.

Adding to 355240340402303 its reverse (303204043042553), we get a palindrome (658444383444856).

The spelling of 355240340402303 in words is "three hundred fifty-five trillion, two hundred forty billion, three hundred forty million, four hundred two thousand, three hundred three".