213653011 has 24 divisors (see below), whose sum is σ = 253901520. Its totient is φ = 178214400.

The previous prime is 213652997. The next prime is 213653021. The reversal of 213653011 is 110356312.

It is a happy number.

It is not a de Polignac number, because 213653011 - 2⁹ = 213652499 is a prime.

It is a super-2 number, since 2×213653011² = 91295218218732242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213653021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 522175 + ... + 522583.

It is an arithmetic number, because the mean of its divisors is an integer number (10579230).

Almost surely, 2^213653011 is an apocalyptic number.

213653011 is a deficient number, since it is larger than the sum of its proper divisors (40248509).

213653011 is a wasteful number, since it uses less digits than its factorization.

213653011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 213653011 is about 14616.8741870483. The cubic root of 213653011 is about 597.8189432966.

The spelling of 213653011 in words is "two hundred thirteen million, six hundred fifty-three thousand, eleven".