346223561 has 2 divisors, whose sum is σ = 346223562. Its totient is φ = 346223560.

The previous prime is 346223543. The next prime is 346223569. The reversal of 346223561 is 165322643.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271227961 + 74995600 = 16469^2 + 8660^2 .

It is a cyclic number.

It is not a de Polignac number, because 346223561 - 2¹⁰ = 346222537 is a prime.

It is not a weakly prime, because it can be changed into another prime (346223569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173111780 + 173111781.

It is an arithmetic number, because the mean of its divisors is an integer number (173111781).

Almost surely, 2^346223561 is an apocalyptic number.

It is an amenable number.

346223561 is a deficient number, since it is larger than the sum of its proper divisors (1).

346223561 is an equidigital number, since it uses as much as digits as its factorization.

346223561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 32.

The square root of 346223561 is about 18607.0836242545. The cubic root of 346223561 is about 702.1860645637.

It can be divided in two parts, 34622 and 3561, that added together give a palindrome (38183).

The spelling of 346223561 in words is "three hundred forty-six million, two hundred twenty-three thousand, five hundred sixty-one".