212031529 has 2 divisors, whose sum is σ = 212031530. Its totient is φ = 212031528.

The previous prime is 212031527. The next prime is 212031563. The reversal of 212031529 is 925130212.

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., 182871529 + 29160000 = 13523^2 + 5400^2 .

It is a cyclic number.

It is not a de Polignac number, because 212031529 - 2¹ = 212031527 is a prime.

Together with 212031527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212031527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106015764 + 106015765.

It is an arithmetic number, because the mean of its divisors is an integer number (106015765).

Almost surely, 2^212031529 is an apocalyptic number.

It is an amenable number.

212031529 is a deficient number, since it is larger than the sum of its proper divisors (1).

212031529 is an equidigital number, since it uses as much as digits as its factorization.

212031529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 212031529 is about 14561.3024486136. The cubic root of 212031529 is about 596.3027538965.

The spelling of 212031529 in words is "two hundred twelve million, thirty-one thousand, five hundred twenty-nine".