212534473 has 2 divisors, whose sum is σ = 212534474. Its totient is φ = 212534472.

The previous prime is 212534393. The next prime is 212534489. The reversal of 212534473 is 374435212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206123449 + 6411024 = 14357^2 + 2532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212534473 is a prime.

It is not a weakly prime, because it can be changed into another prime (212534573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106267236 + 106267237.

It is an arithmetic number, because the mean of its divisors is an integer number (106267237).

Almost surely, 2^212534473 is an apocalyptic number.

It is an amenable number.

212534473 is a deficient number, since it is larger than the sum of its proper divisors (1).

212534473 is an equidigital number, since it uses as much as digits as its factorization.

212534473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 31.

The square root of 212534473 is about 14578.5621033077. The cubic root of 212534473 is about 596.7738631962.

Adding to 212534473 its reverse (374435212), we get a palindrome (586969685).

The spelling of 212534473 in words is "two hundred twelve million, five hundred thirty-four thousand, four hundred seventy-three".