340440143297 has 2 divisors, whose sum is σ = 340440143298. Its totient is φ = 340440143296.

The previous prime is 340440143287. The next prime is 340440143341. The reversal of 340440143297 is 792341044043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258195080641 + 82245062656 = 508129^2 + 286784^2 .

It is a cyclic number.

It is not a de Polignac number, because 340440143297 - 2³² = 336145176001 is a prime.

It is not a weakly prime, because it can be changed into another prime (340440143287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170220071648 + 170220071649.

It is an arithmetic number, because the mean of its divisors is an integer number (170220071649).

Almost surely, 2^340440143297 is an apocalyptic number.

It is an amenable number.

340440143297 is a deficient number, since it is larger than the sum of its proper divisors (1).

340440143297 is an equidigital number, since it uses as much as digits as its factorization.

340440143297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 340440143297 in words is "three hundred forty billion, four hundred forty million, one hundred forty-three thousand, two hundred ninety-seven".