213723230 has 16 divisors (see below), whose sum is σ = 439659360. Its totient is φ = 73276512.

The previous prime is 213723227. The next prime is 213723253. The reversal of 213723230 is 32327312.

It is a junction number, because it is equal to n+sod(n) for n = 213723196 and 213723205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1526525 + ... + 1526664.

It is an arithmetic number, because the mean of its divisors is an integer number (27478710).

Almost surely, 2^213723230 is an apocalyptic number.

213723230 is an abundant number, since it is smaller than the sum of its proper divisors (225936130).

213723230 is a wasteful number, since it uses less digits than its factorization.

213723230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053203.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 213723230 is about 14619.2759738641. The cubic root of 213723230 is about 597.8844289957.

The spelling of 213723230 in words is "two hundred thirteen million, seven hundred twenty-three thousand, two hundred thirty".