213485885 has 12 divisors (see below), whose sum is σ = 267809052. Its totient is φ = 163361088.

The previous prime is 213485863. The next prime is 213485911. The reversal of 213485885 is 588584312.

It can be written as a sum of positive squares in 2 ways, for example, as 29964676 + 183521209 = 5474^2 + 13547^2 .

It is a de Polignac number, because none of the positive numbers 2^k-213485885 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37712 + ... + 43001.

It is an arithmetic number, because the mean of its divisors is an integer number (22317421).

Almost surely, 2^213485885 is an apocalyptic number.

It is an amenable number.

213485885 is a deficient number, since it is larger than the sum of its proper divisors (54323167).

213485885 is an equidigital number, since it uses as much as digits as its factorization.

213485885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80764 (or 80741 counting only the distinct ones).

The product of its digits is 307200, while the sum is 44.

The square root of 213485885 is about 14611.1561828625. The cubic root of 213485885 is about 597.6630251394.

The spelling of 213485885 in words is "two hundred thirteen million, four hundred eighty-five thousand, eight hundred eighty-five".