213481105 has 8 divisors (see below), whose sum is σ = 256272552. Its totient is φ = 170721408.

The previous prime is 213481067. The next prime is 213481117. The reversal of 213481105 is 501184312.

It can be written as a sum of positive squares in 4 ways, for example, as 817216 + 212663889 = 904^2 + 14583^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213481105 - 2²⁵ = 179926673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213481105.

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, 10947 + ... + 23383.

It is an arithmetic number, because the mean of its divisors is an integer number (32034069).

Almost surely, 2^213481105 is an apocalyptic number.

It is an amenable number.

213481105 is a deficient number, since it is larger than the sum of its proper divisors (42791447).

213481105 is a wasteful number, since it uses less digits than its factorization.

213481105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15875.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 213481105 is about 14610.9926083069. The cubic root of 213481105 is about 597.6585645001.

The spelling of 213481105 in words is "two hundred thirteen million, four hundred eighty-one thousand, one hundred five".