340121233 has 2 divisors, whose sum is σ = 340121234. Its totient is φ = 340121232.

The previous prime is 340121231. The next prime is 340121273. The reversal of 340121233 is 332121043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339775489 + 345744 = 18433^2 + 588^2 .

It is a cyclic number.

It is not a de Polignac number, because 340121233 - 2¹ = 340121231 is a prime.

Together with 340121231, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 340121233.

It is not a weakly prime, because it can be changed into another prime (340121231) 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, 170060616 + 170060617.

It is an arithmetic number, because the mean of its divisors is an integer number (170060617).

Almost surely, 2^340121233 is an apocalyptic number.

It is an amenable number.

340121233 is a deficient number, since it is larger than the sum of its proper divisors (1).

340121233 is an equidigital number, since it uses as much as digits as its factorization.

340121233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 340121233 is about 18442.3760128678. The cubic root of 340121233 is about 698.0361506770.

Adding to 340121233 its reverse (332121043), we get a palindrome (672242276).

It can be divided in two parts, 34012 and 1233, that added together give a triangular number (35245 = T₂₆₅).

The spelling of 340121233 in words is "three hundred forty million, one hundred twenty-one thousand, two hundred thirty-three".