212131653 has 8 divisors (see below), whose sum is σ = 284877600. Its totient is φ = 140403408.

The previous prime is 212131651. The next prime is 212131679. The reversal of 212131653 is 356131212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212131653 - 2¹ = 212131651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212131651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253938 + ... + 254771.

It is an arithmetic number, because the mean of its divisors is an integer number (35609700).

Almost surely, 2^212131653 is an apocalyptic number.

It is an amenable number.

212131653 is a deficient number, since it is larger than the sum of its proper divisors (72745947).

212131653 is a wasteful number, since it uses less digits than its factorization.

212131653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508851.

The product of its digits is 1080, while the sum is 24.

The square root of 212131653 is about 14564.7400594724. The cubic root of 212131653 is about 596.3965997221.

Adding to 212131653 its reverse (356131212), we get a palindrome (568262865).

The spelling of 212131653 in words is "two hundred twelve million, one hundred thirty-one thousand, six hundred fifty-three".