340630505297 has 4 divisors (see below), whose sum is σ = 352376384820. Its totient is φ = 328884625776.

The previous prime is 340630505279. The next prime is 340630505393. The reversal of 340630505297 is 792505036043.

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 111710361361 + 228920143936 = 334231^2 + 478456^2 .

It is a cyclic number.

It is not a de Polignac number, because 340630505297 - 2¹⁶ = 340630439761 is a prime.

It is a super-2 number, since 2×340630505297² (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 (340630585297) 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 in 3 ways as a sum of consecutive naturals, for example, 5872939718 + ... + 5872939775.

It is an arithmetic number, because the mean of its divisors is an integer number (88094096205).

Almost surely, 2^340630505297 is an apocalyptic number.

It is an amenable number.

340630505297 is a deficient number, since it is larger than the sum of its proper divisors (11745879523).

340630505297 is a wasteful number, since it uses less digits than its factorization.

340630505297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11745879522.

The product of its (nonzero) digits is 680400, while the sum is 44.

The spelling of 340630505297 in words is "three hundred forty billion, six hundred thirty million, five hundred five thousand, two hundred ninety-seven".