213241785 has 32 divisors (see below), whose sum is σ = 354257280. Its totient is φ = 109401600.

The previous prime is 213241783. The next prime is 213241849. The reversal of 213241785 is 587142312.

It is not a de Polignac number, because 213241785 - 2¹ = 213241783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213241781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143245 + ... + 144725.

It is an arithmetic number, because the mean of its divisors is an integer number (11070540).

Almost surely, 2^213241785 is an apocalyptic number.

It is an amenable number.

213241785 is a deficient number, since it is larger than the sum of its proper divisors (141015495).

213241785 is a wasteful number, since it uses less digits than its factorization.

213241785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849.

The product of its digits is 13440, while the sum is 33.

The square root of 213241785 is about 14602.8005875585. The cubic root of 213241785 is about 597.4351487419.

The spelling of 213241785 in words is "two hundred thirteen million, two hundred forty-one thousand, seven hundred eighty-five".