346378481 has 2 divisors, whose sum is σ = 346378482. Its totient is φ = 346378480.

The previous prime is 346378471. The next prime is 346378489. The reversal of 346378481 is 184873643.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282777856 + 63600625 = 16816^2 + 7975^2 .

It is an emirp because it is prime and its reverse (184873643) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-346378481 is a prime.

It is a super-2 number, since 2×346378481² = 239956104199734722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (346378489) 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, 173189240 + 173189241.

It is an arithmetic number, because the mean of its divisors is an integer number (173189241).

Almost surely, 2^346378481 is an apocalyptic number.

It is an amenable number.

346378481 is a deficient number, since it is larger than the sum of its proper divisors (1).

346378481 is an equidigital number, since it uses as much as digits as its factorization.

346378481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The square root of 346378481 is about 18611.2460893944. The cubic root of 346378481 is about 702.2907815311.

The spelling of 346378481 in words is "three hundred forty-six million, three hundred seventy-eight thousand, four hundred eighty-one".