346890121 has 2 divisors, whose sum is σ = 346890122. Its totient is φ = 346890120.

The previous prime is 346890109. The next prime is 346890149. The reversal of 346890121 is 121098643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183331600 + 163558521 = 13540^2 + 12789^2 .

It is an emirp because it is prime and its reverse (121098643) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 346890121 - 2²⁷ = 212672393 is a prime.

It is not a weakly prime, because it can be changed into another prime (346890421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173445060 + 173445061.

It is an arithmetic number, because the mean of its divisors is an integer number (173445061).

Almost surely, 2^346890121 is an apocalyptic number.

It is an amenable number.

346890121 is a deficient number, since it is larger than the sum of its proper divisors (1).

346890121 is an equidigital number, since it uses as much as digits as its factorization.

346890121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 346890121 is about 18624.9864697937. The cubic root of 346890121 is about 702.6363989231.

The spelling of 346890121 in words is "three hundred forty-six million, eight hundred ninety thousand, one hundred twenty-one".