340455123181 has 2 divisors, whose sum is σ = 340455123182. Its totient is φ = 340455123180.

The previous prime is 340455123179. The next prime is 340455123191. The reversal of 340455123181 is 181321554043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304008876900 + 36446246281 = 551370^2 + 190909^2 .

It is a cyclic number.

It is not a de Polignac number, because 340455123181 - 2¹ = 340455123179 is a prime.

It is a super-2 number, since 2×340455123181² (a number of 24 digits) contains 22 as substring.

Together with 340455123179, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 340455123181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340455123161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170227561590 + 170227561591.

It is an arithmetic number, because the mean of its divisors is an integer number (170227561591).

Almost surely, 2^340455123181 is an apocalyptic number.

It is an amenable number.

340455123181 is a deficient number, since it is larger than the sum of its proper divisors (1).

340455123181 is an equidigital number, since it uses as much as digits as its factorization.

340455123181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 340455123181 in words is "three hundred forty billion, four hundred fifty-five million, one hundred twenty-three thousand, one hundred eighty-one".