340236121 has 2 divisors, whose sum is σ = 340236122. Its totient is φ = 340236120.

The previous prime is 340236109. The next prime is 340236151. The reversal of 340236121 is 121632043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324720400 + 15515721 = 18020^2 + 3939^2 .

It is a cyclic number.

It is not a de Polignac number, because 340236121 - 2⁷ = 340235993 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 340236092 and 340236101.

It is not a weakly prime, because it can be changed into another prime (340236151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170118060 + 170118061.

It is an arithmetic number, because the mean of its divisors is an integer number (170118061).

Almost surely, 2^340236121 is an apocalyptic number.

It is an amenable number.

340236121 is a deficient number, since it is larger than the sum of its proper divisors (1).

340236121 is an equidigital number, since it uses as much as digits as its factorization.

340236121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 340236121 is about 18445.4905329189. The cubic root of 340236121 is about 698.1147373118.

Adding to 340236121 its reverse (121632043), we get a palindrome (461868164).

The spelling of 340236121 in words is "three hundred forty million, two hundred thirty-six thousand, one hundred twenty-one".