348090221 has 2 divisors, whose sum is σ = 348090222. Its totient is φ = 348090220.

The previous prime is 348090179. The next prime is 348090229. The reversal of 348090221 is 122090843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230128900 + 117961321 = 15170^2 + 10861^2 .

It is a cyclic number.

It is not a de Polignac number, because 348090221 - 2¹⁰ = 348089197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (348090229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174045110 + 174045111.

It is an arithmetic number, because the mean of its divisors is an integer number (174045111).

Almost surely, 2^348090221 is an apocalyptic number.

It is an amenable number.

348090221 is a deficient number, since it is larger than the sum of its proper divisors (1).

348090221 is an equidigital number, since it uses as much as digits as its factorization.

348090221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 348090221 is about 18657.1761260915. The cubic root of 348090221 is about 703.4457458791.

The spelling of 348090221 in words is "three hundred forty-eight million, ninety thousand, two hundred twenty-one".