340512540281 has 2 divisors, whose sum is σ = 340512540282. Its totient is φ = 340512540280.

The previous prime is 340512540229. The next prime is 340512540289. The reversal of 340512540281 is 182045215043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226076475625 + 114436064656 = 475475^2 + 338284^2 .

It is an emirp because it is prime and its reverse (182045215043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340512540281 - 2¹⁸ = 340512278137 is a prime.

It is a super-2 number, since 2×340512540281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (340512540289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170256270140 + 170256270141.

It is an arithmetic number, because the mean of its divisors is an integer number (170256270141).

Almost surely, 2^340512540281 is an apocalyptic number.

It is an amenable number.

340512540281 is a deficient number, since it is larger than the sum of its proper divisors (1).

340512540281 is an equidigital number, since it uses as much as digits as its factorization.

340512540281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 340512540281 in words is "three hundred forty billion, five hundred twelve million, five hundred forty thousand, two hundred eighty-one".