213448081 has 16 divisors (see below), whose sum is σ = 269872128. Its totient is φ = 163976400.

The previous prime is 213448057. The next prime is 213448097. The reversal of 213448081 is 180844312.

It is not a de Polignac number, because 213448081 - 2²¹ = 211350929 is a prime.

It is a super-2 number, since 2×213448081² = 91120166565165122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213448021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14055 + ... + 24988.

It is an arithmetic number, because the mean of its divisors is an integer number (16867008).

Almost surely, 2^213448081 is an apocalyptic number.

It is an amenable number.

213448081 is a deficient number, since it is larger than the sum of its proper divisors (56424047).

213448081 is a wasteful number, since it uses less digits than its factorization.

213448081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39132.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 213448081 is about 14609.8624565736. The cubic root of 213448081 is about 597.6277450759.

The spelling of 213448081 in words is "two hundred thirteen million, four hundred forty-eight thousand, eighty-one".