340256537 has 2 divisors, whose sum is σ = 340256538. Its totient is φ = 340256536.

The previous prime is 340256531. The next prime is 340256563. The reversal of 340256537 is 735652043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173949721 + 166306816 = 13189^2 + 12896^2 .

It is a cyclic number.

It is not a de Polignac number, because 340256537 - 2⁶ = 340256473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340256497 and 340256506.

It is not a weakly prime, because it can be changed into another prime (340256531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170128268 + 170128269.

It is an arithmetic number, because the mean of its divisors is an integer number (170128269).

Almost surely, 2^340256537 is an apocalyptic number.

It is an amenable number.

340256537 is a deficient number, since it is larger than the sum of its proper divisors (1).

340256537 is an equidigital number, since it uses as much as digits as its factorization.

340256537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 35.

The square root of 340256537 is about 18446.0439390130. The cubic root of 340256537 is about 698.1287005807.

The spelling of 340256537 in words is "three hundred forty million, two hundred fifty-six thousand, five hundred thirty-seven".