213911265 has 16 divisors (see below), whose sum is σ = 344174400. Its totient is φ = 113447232.

The previous prime is 213911237. The next prime is 213911267. The reversal of 213911265 is 562119312.

It is not a de Polignac number, because 213911265 - 2¹⁰ = 213910241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213911267) 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, 37150 + ... + 42519.

It is an arithmetic number, because the mean of its divisors is an integer number (21510900).

Almost surely, 2^213911265 is an apocalyptic number.

It is an amenable number.

213911265 is a deficient number, since it is larger than the sum of its proper divisors (130263135).

213911265 is a wasteful number, since it uses less digits than its factorization.

213911265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79856.

The product of its digits is 3240, while the sum is 30.

The square root of 213911265 is about 14625.7056240032. The cubic root of 213911265 is about 598.0597183867.

The spelling of 213911265 in words is "two hundred thirteen million, nine hundred eleven thousand, two hundred sixty-five".