213412273 has 2 divisors, whose sum is σ = 213412274. Its totient is φ = 213412272.

The previous prime is 213412261. The next prime is 213412321. The reversal of 213412273 is 372214312.

It is a happy number.

213412273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212926464 + 485809 = 14592^2 + 697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213412273 is a prime.

It is not a weakly prime, because it can be changed into another prime (213412673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106706136 + 106706137.

It is an arithmetic number, because the mean of its divisors is an integer number (106706137).

Almost surely, 2^213412273 is an apocalyptic number.

It is an amenable number.

213412273 is a deficient number, since it is larger than the sum of its proper divisors (1).

213412273 is an equidigital number, since it uses as much as digits as its factorization.

213412273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 25.

The square root of 213412273 is about 14608.6369316237. The cubic root of 213412273 is about 597.5943239101.

Adding to 213412273 its reverse (372214312), we get a palindrome (585626585).

The spelling of 213412273 in words is "two hundred thirteen million, four hundred twelve thousand, two hundred seventy-three".