340532221 has 2 divisors, whose sum is σ = 340532222. Its totient is φ = 340532220.

The previous prime is 340532209. The next prime is 340532233. The reversal of 340532221 is 122235043.

It is a balanced prime because it is at equal distance from previous prime (340532209) and next prime (340532233).

It can be written as a sum of positive squares in only one way, i.e., 238239225 + 102292996 = 15435^2 + 10114^2 .

It is a cyclic number.

It is not a de Polignac number, because 340532221 - 2¹¹ = 340530173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340532192 and 340532201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340538221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170266110 + 170266111.

It is an arithmetic number, because the mean of its divisors is an integer number (170266111).

Almost surely, 2^340532221 is an apocalyptic number.

It is an amenable number.

340532221 is a deficient number, since it is larger than the sum of its proper divisors (1).

340532221 is an equidigital number, since it uses as much as digits as its factorization.

340532221 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 22.

The square root of 340532221 is about 18453.5151393982. The cubic root of 340532221 is about 698.3171965495.

Adding to 340532221 its reverse (122235043), we get a palindrome (462767264).

The spelling of 340532221 in words is "three hundred forty million, five hundred thirty-two thousand, two hundred twenty-one".