340314521 has 2 divisors, whose sum is σ = 340314522. Its totient is φ = 340314520.

The previous prime is 340314503. The next prime is 340314523. The reversal of 340314521 is 125413043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250747225 + 89567296 = 15835^2 + 9464^2 .

It is a cyclic number.

It is not a de Polignac number, because 340314521 - 2²² = 336120217 is a prime.

Together with 340314523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340314523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170157260 + 170157261.

It is an arithmetic number, because the mean of its divisors is an integer number (170157261).

Almost surely, 2^340314521 is an apocalyptic number.

It is an amenable number.

340314521 is a deficient number, since it is larger than the sum of its proper divisors (1).

340314521 is an equidigital number, since it uses as much as digits as its factorization.

340314521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 340314521 is about 18447.6155911814. The cubic root of 340314521 is about 698.1683549698.

Adding to 340314521 its reverse (125413043), we get a palindrome (465727564).

The spelling of 340314521 in words is "three hundred forty million, three hundred fourteen thousand, five hundred twenty-one".