346481021 has 2 divisors, whose sum is σ = 346481022. Its totient is φ = 346481020.

The previous prime is 346480969. The next prime is 346481033. The reversal of 346481021 is 120184643.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 346480996 + 25 = 18614^2 + 5^2 .

It is an emirp because it is prime and its reverse (120184643) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 346481021 - 2¹⁰ = 346479997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346481041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173240510 + 173240511.

It is an arithmetic number, because the mean of its divisors is an integer number (173240511).

Almost surely, 2^346481021 is an apocalyptic number.

It is an amenable number.

346481021 is a deficient number, since it is larger than the sum of its proper divisors (1).

346481021 is an equidigital number, since it uses as much as digits as its factorization.

346481021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 346481021 is about 18614.0006715375. Note that the first 3 decimals coincide. The cubic root of 346481021 is about 702.3600754737.

The spelling of 346481021 in words is "three hundred forty-six million, four hundred eighty-one thousand, twenty-one".