212033431 has 4 divisors (see below), whose sum is σ = 214092112. Its totient is φ = 209974752.

The previous prime is 212033383. The next prime is 212033461. The reversal of 212033431 is 134330212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212033431 - 2¹³ = 212025239 is a prime.

It is a super-2 number, since 2×212033431² = 89916351723263522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212033399 and 212033408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212033461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1029186 + ... + 1029391.

It is an arithmetic number, because the mean of its divisors is an integer number (53523028).

Almost surely, 2^212033431 is an apocalyptic number.

212033431 is a deficient number, since it is larger than the sum of its proper divisors (2058681).

212033431 is a wasteful number, since it uses less digits than its factorization.

212033431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2058680.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 212033431 is about 14561.3677585589. The cubic root of 212033431 is about 596.3045369088.

Adding to 212033431 its reverse (134330212), we get a palindrome (346363643).

The spelling of 212033431 in words is "two hundred twelve million, thirty-three thousand, four hundred thirty-one".