340210253 has 2 divisors, whose sum is σ = 340210254. Its totient is φ = 340210252.

The previous prime is 340210231. The next prime is 340210271. The reversal of 340210253 is 352012043.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248472169 + 91738084 = 15763^2 + 9578^2 .

It is a cyclic number.

It is not a de Polignac number, because 340210253 - 2¹⁸ = 339948109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340210553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170105126 + 170105127.

It is an arithmetic number, because the mean of its divisors is an integer number (170105127).

Almost surely, 2^340210253 is an apocalyptic number.

It is an amenable number.

340210253 is a deficient number, since it is larger than the sum of its proper divisors (1).

340210253 is an equidigital number, since it uses as much as digits as its factorization.

340210253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 340210253 is about 18444.7893183956. The cubic root of 340210253 is about 698.0970444130.

Adding to 340210253 its reverse (352012043), we get a palindrome (692222296).

The spelling of 340210253 in words is "three hundred forty million, two hundred ten thousand, two hundred fifty-three".