345211213 has 2 divisors, whose sum is σ = 345211214. Its totient is φ = 345211212.

The previous prime is 345211201. The next prime is 345211241. The reversal of 345211213 is 312112543.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223263364 + 121947849 = 14942^2 + 11043^2 .

It is a cyclic number.

It is not a de Polignac number, because 345211213 - 2²⁵ = 311656781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345211283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172605606 + 172605607.

It is an arithmetic number, because the mean of its divisors is an integer number (172605607).

Almost surely, 2^345211213 is an apocalyptic number.

It is an amenable number.

345211213 is a deficient number, since it is larger than the sum of its proper divisors (1).

345211213 is an equidigital number, since it uses as much as digits as its factorization.

345211213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 345211213 is about 18579.8604138998. The cubic root of 345211213 is about 701.5010056331.

Adding to 345211213 its reverse (312112543), we get a palindrome (657323756).

The spelling of 345211213 in words is "three hundred forty-five million, two hundred eleven thousand, two hundred thirteen".