340240237 has 2 divisors, whose sum is σ = 340240238. Its totient is φ = 340240236.

The previous prime is 340240223. The next prime is 340240247. The reversal of 340240237 is 732042043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316092841 + 24147396 = 17779^2 + 4914^2 .

It is a cyclic number.

It is not a de Polignac number, because 340240237 - 2²³ = 331851629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340240217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170120118 + 170120119.

It is an arithmetic number, because the mean of its divisors is an integer number (170120119).

Almost surely, 2^340240237 is an apocalyptic number.

It is an amenable number.

340240237 is a deficient number, since it is larger than the sum of its proper divisors (1).

340240237 is an equidigital number, since it uses as much as digits as its factorization.

340240237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 340240237 is about 18445.6021045668. The cubic root of 340240237 is about 698.1175524437.

The spelling of 340240237 in words is "three hundred forty million, two hundred forty thousand, two hundred thirty-seven".