340313556497 has 4 divisors (see below), whose sum is σ = 340447067700. Its totient is φ = 340180045296.

The previous prime is 340313556439. The next prime is 340313556529. The reversal of 340313556497 is 794655313043.

It is a Cunningham number, because it is equal to 583364²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 314649196096 + 25664360401 = 560936^2 + 160201^2 .

It is a cyclic number.

It is not a de Polignac number, because 340313556497 - 2²⁴ = 340296779281 is a prime.

It is a super-2 number, since 2×340313556497² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340313556997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66751778 + ... + 66756875.

It is an arithmetic number, because the mean of its divisors is an integer number (85111766925).

Almost surely, 2^340313556497 is an apocalyptic number.

It is an amenable number.

340313556497 is a deficient number, since it is larger than the sum of its proper divisors (133511203).

340313556497 is a wasteful number, since it uses less digits than its factorization.

340313556497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133511202.

The product of its (nonzero) digits is 4082400, while the sum is 50.

The spelling of 340313556497 in words is "three hundred forty billion, three hundred thirteen million, five hundred fifty-six thousand, four hundred ninety-seven".