212330653 has 4 divisors (see below), whose sum is σ = 212363008. Its totient is φ = 212298300.

The previous prime is 212330639. The next prime is 212330659. The reversal of 212330653 is 356033212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212330653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212330659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2451 + ... + 20752.

It is an arithmetic number, because the mean of its divisors is an integer number (53090752).

Almost surely, 2^212330653 is an apocalyptic number.

It is an amenable number.

212330653 is a deficient number, since it is larger than the sum of its proper divisors (32355).

212330653 is an equidigital number, since it uses as much as digits as its factorization.

212330653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32354.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 212330653 is about 14571.5700252238. The cubic root of 212330653 is about 596.5830339938.

Adding to 212330653 its reverse (356033212), we get a palindrome (568363865).

The spelling of 212330653 in words is "two hundred twelve million, three hundred thirty thousand, six hundred fifty-three".