340237 has 2 divisors, whose sum is σ = 340238. Its totient is φ = 340236.

The previous prime is 340211. The next prime is 340261. The reversal of 340237 is 732043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320356 + 19881 = 566^2 + 141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340237 is a prime.

It is a super-2 number, since 2×340237² = 231522432338, which contains 22 as substring.

It is a nialpdrome in base 13.

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, 170118 + 170119.

It is an arithmetic number, because the mean of its divisors is an integer number (170119).

2³⁴⁰²³⁷ is an apocalyptic number.

It is an amenable number.

340237 is a deficient number, since it is larger than the sum of its proper divisors (1).

340237 is an equidigital number, since it uses as much as digits as its factorization.

340237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 340237 is about 583.2983799052. The cubic root of 340237 is about 69.8115338504.

The spelling of 340237 in words is "three hundred forty thousand, two hundred thirty-seven".