346561213 has 2 divisors, whose sum is σ = 346561214. Its totient is φ = 346561212.

The previous prime is 346561141. The next prime is 346561219. The reversal of 346561213 is 312165643.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328225689 + 18335524 = 18117^2 + 4282^2 .

It is an emirp because it is prime and its reverse (312165643) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-346561213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346561219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173280606 + 173280607.

It is an arithmetic number, because the mean of its divisors is an integer number (173280607).

Almost surely, 2^346561213 is an apocalyptic number.

It is an amenable number.

346561213 is a deficient number, since it is larger than the sum of its proper divisors (1).

346561213 is an equidigital number, since it uses as much as digits as its factorization.

346561213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 346561213 is about 18616.1546244116. The cubic root of 346561213 is about 702.4142576761.

The spelling of 346561213 in words is "three hundred forty-six million, five hundred sixty-one thousand, two hundred thirteen".