340781713697 has 2 divisors, whose sum is σ = 340781713698. Its totient is φ = 340781713696.

The previous prime is 340781713667. The next prime is 340781713757. The reversal of 340781713697 is 796317187043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271909059601 + 68872654096 = 521449^2 + 262436^2 .

It is a cyclic number.

It is not a de Polignac number, because 340781713697 - 2¹² = 340781709601 is a prime.

It is a super-2 number, since 2×340781713697² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (340781713627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170390856848 + 170390856849.

It is an arithmetic number, because the mean of its divisors is an integer number (170390856849).

Almost surely, 2^340781713697 is an apocalyptic number.

It is an amenable number.

340781713697 is a deficient number, since it is larger than the sum of its proper divisors (1).

340781713697 is an equidigital number, since it uses as much as digits as its factorization.

340781713697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5334336, while the sum is 56.

The spelling of 340781713697 in words is "three hundred forty billion, seven hundred eighty-one million, seven hundred thirteen thousand, six hundred ninety-seven".