340514221 has 2 divisors, whose sum is σ = 340514222. Its totient is φ = 340514220.

The previous prime is 340514197. The next prime is 340514243. The reversal of 340514221 is 122415043.

It is an a-pointer prime, because the next prime (340514243) can be obtained adding 340514221 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197711721 + 142802500 = 14061^2 + 11950^2 .

It is a cyclic number.

It is not a de Polignac number, because 340514221 - 2²⁵ = 306959789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340514192 and 340514201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340514921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170257110 + 170257111.

It is an arithmetic number, because the mean of its divisors is an integer number (170257111).

Almost surely, 2^340514221 is an apocalyptic number.

It is an amenable number.

340514221 is a deficient number, since it is larger than the sum of its proper divisors (1).

340514221 is an equidigital number, since it uses as much as digits as its factorization.

340514221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 340514221 is about 18453.0274209952. The cubic root of 340514221 is about 698.3048923482.

Adding to 340514221 its reverse (122415043), we get a palindrome (462929264).

The spelling of 340514221 in words is "three hundred forty million, five hundred fourteen thousand, two hundred twenty-one".