213113865 has 16 divisors (see below), whose sum is σ = 341290368. Its totient is φ = 113558016.

The previous prime is 213113863. The next prime is 213113893. The reversal of 213113865 is 568311312.

213113865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213113865 - 2¹ = 213113863 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213113863) 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, 12537 + ... + 24153.

It is an arithmetic number, because the mean of its divisors is an integer number (21330648).

Almost surely, 2^213113865 is an apocalyptic number.

It is an amenable number.

213113865 is a deficient number, since it is larger than the sum of its proper divisors (128176503).

213113865 is a wasteful number, since it uses less digits than its factorization.

213113865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12848.

The product of its digits is 4320, while the sum is 30.

The square root of 213113865 is about 14598.4199487479. The cubic root of 213113865 is about 597.3156612298.

The spelling of 213113865 in words is "two hundred thirteen million, one hundred thirteen thousand, eight hundred sixty-five".