211325613 has 4 divisors (see below), whose sum is σ = 281767488. Its totient is φ = 140883740.

The previous prime is 211325579. The next prime is 211325629. The reversal of 211325613 is 316523112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211325613 - 2⁶ = 211325549 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211305613) 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 3 ways as a sum of consecutive naturals, for example, 35220933 + ... + 35220938.

It is an arithmetic number, because the mean of its divisors is an integer number (70441872).

Almost surely, 2^211325613 is an apocalyptic number.

It is an amenable number.

211325613 is a deficient number, since it is larger than the sum of its proper divisors (70441875).

211325613 is an equidigital number, since it uses as much as digits as its factorization.

211325613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70441874.

The product of its digits is 1080, while the sum is 24.

The square root of 211325613 is about 14537.0427873072. The cubic root of 211325613 is about 595.6402617549.

Adding to 211325613 its reverse (316523112), we get a palindrome (527848725).

The spelling of 211325613 in words is "two hundred eleven million, three hundred twenty-five thousand, six hundred thirteen".