340585458281 has 2 divisors, whose sum is σ = 340585458282. Its totient is φ = 340585458280.

The previous prime is 340585458271. The next prime is 340585458287. The reversal of 340585458281 is 182854585043.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203866698256 + 136718760025 = 451516^2 + 369755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340585458281 is a prime.

It is a super-2 number, since 2×340585458281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (340585458287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170292729140 + 170292729141.

It is an arithmetic number, because the mean of its divisors is an integer number (170292729141).

Almost surely, 2^340585458281 is an apocalyptic number.

It is an amenable number.

340585458281 is a deficient number, since it is larger than the sum of its proper divisors (1).

340585458281 is an equidigital number, since it uses as much as digits as its factorization.

340585458281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144000, while the sum is 53.

The spelling of 340585458281 in words is "three hundred forty billion, five hundred eighty-five million, four hundred fifty-eight thousand, two hundred eighty-one".