340261 has 2 divisors, whose sum is σ = 340262. Its totient is φ = 340260.

The previous prime is 340237. The next prime is 340267. The reversal of 340261 is 162043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231361 + 108900 = 481^2 + 330^2 .

It is a cyclic number.

It is not a de Polignac number, because 340261 - 2⁹ = 339749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170130 + 170131.

It is an arithmetic number, because the mean of its divisors is an integer number (170131).

2³⁴⁰²⁶¹ is an apocalyptic number.

It is an amenable number.

340261 is a deficient number, since it is larger than the sum of its proper divisors (1).

340261 is an equidigital number, since it uses as much as digits as its factorization.

340261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 340261 is about 583.3189522037. The cubic root of 340261 is about 69.8131752920.

The spelling of 340261 in words is "three hundred forty thousand, two hundred sixty-one".