212435451 has 12 divisors (see below), whose sum is σ = 324901512. Its totient is φ = 133292736.

The previous prime is 212435393. The next prime is 212435471. The reversal of 212435451 is 154534212.

It is not a de Polignac number, because 212435451 - 2⁶ = 212435387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212435471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 694081 + ... + 694386.

It is an arithmetic number, because the mean of its divisors is an integer number (27075126).

Almost surely, 2^212435451 is an apocalyptic number.

212435451 is a deficient number, since it is larger than the sum of its proper divisors (112466061).

212435451 is a wasteful number, since it uses less digits than its factorization.

212435451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388490 (or 1388487 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 212435451 is about 14575.1655565211. The cubic root of 212435451 is about 596.6811677690.

Adding to 212435451 its reverse (154534212), we get a palindrome (366969663).

The spelling of 212435451 in words is "two hundred twelve million, four hundred thirty-five thousand, four hundred fifty-one".