348118921 has 2 divisors, whose sum is σ = 348118922. Its totient is φ = 348118920.

The previous prime is 348118909. The next prime is 348118943. The reversal of 348118921 is 129811843.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185913225 + 162205696 = 13635^2 + 12736^2 .

It is a cyclic number.

It is not a de Polignac number, because 348118921 - 2⁵ = 348118889 is a prime.

It is equal to p_18707734 and since 348118921 and 18707734 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (348118021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174059460 + 174059461.

It is an arithmetic number, because the mean of its divisors is an integer number (174059461).

Almost surely, 2^348118921 is an apocalyptic number.

It is an amenable number.

348118921 is a deficient number, since it is larger than the sum of its proper divisors (1).

348118921 is an equidigital number, since it uses as much as digits as its factorization.

348118921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 37.

The square root of 348118921 is about 18657.9452512864. The cubic root of 348118921 is about 703.4650783556.

The spelling of 348118921 in words is "three hundred forty-eight million, one hundred eighteen thousand, nine hundred twenty-one".