213145011 has 12 divisors (see below), whose sum is σ = 310125192. Its totient is φ = 141058656.

The previous prime is 213145003. The next prime is 213145013. The reversal of 213145011 is 110541312.

213145011 is a `hidden beast` number, since 213 + 1 + 450 + 1 + 1 = 666.

It is not a de Polignac number, because 213145011 - 2³ = 213145003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213145013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85201 + ... + 87666.

It is an arithmetic number, because the mean of its divisors is an integer number (25843766).

Almost surely, 2^213145011 is an apocalyptic number.

213145011 is a deficient number, since it is larger than the sum of its proper divisors (96980181).

213145011 is a wasteful number, since it uses less digits than its factorization.

213145011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173010 (or 173007 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 213145011 is about 14599.4866690579. The cubic root of 213145011 is about 597.3447584878.

Adding to 213145011 its reverse (110541312), we get a palindrome (323686323).

The spelling of 213145011 in words is "two hundred thirteen million, one hundred forty-five thousand, eleven".