213723653 has 12 divisors (see below), whose sum is σ = 252469728. Its totient is φ = 179346960.

The previous prime is 213723637. The next prime is 213723683. The reversal of 213723653 is 356327312.

It is not a de Polignac number, because 213723653 - 2⁴ = 213723637 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 (213723623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55625 + ... + 59342.

It is an arithmetic number, because the mean of its divisors is an integer number (21039144).

Almost surely, 2^213723653 is an apocalyptic number.

It is an amenable number.

213723653 is a deficient number, since it is larger than the sum of its proper divisors (38746075).

213723653 is a wasteful number, since it uses less digits than its factorization.

213723653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115004 (or 114991 counting only the distinct ones).

The product of its digits is 22680, while the sum is 32.

The square root of 213723653 is about 14619.2904410577. The cubic root of 213723653 is about 597.8848234387.

The spelling of 213723653 in words is "two hundred thirteen million, seven hundred twenty-three thousand, six hundred fifty-three".