340781713757 has 2 divisors, whose sum is σ = 340781713758. Its totient is φ = 340781713756.

The previous prime is 340781713697. The next prime is 340781713759. The reversal of 340781713757 is 757317187043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184544131396 + 156237582361 = 429586^2 + 395269^2 .

It is an emirp because it is prime and its reverse (757317187043) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340781713757 is a prime.

It is a super-2 number, since 2×340781713757² (a number of 24 digits) contains 22 as substring.

Together with 340781713759, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 340781713699 and 340781713708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340781713759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170390856878 + 170390856879.

It is an arithmetic number, because the mean of its divisors is an integer number (170390856879).

Almost surely, 2^340781713757 is an apocalyptic number.

It is an amenable number.

340781713757 is a deficient number, since it is larger than the sum of its proper divisors (1).

340781713757 is an equidigital number, since it uses as much as digits as its factorization.

340781713757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3457440, while the sum is 53.

The spelling of 340781713757 in words is "three hundred forty billion, seven hundred eighty-one million, seven hundred thirteen thousand, seven hundred fifty-seven".