213011235 has 32 divisors (see below), whose sum is σ = 391752000. Its totient is φ = 109686528.

The previous prime is 213011233. The next prime is 213011237. The reversal of 213011235 is 532110312.

It is an interprime number because it is at equal distance from previous prime (213011233) and next prime (213011237).

It is not a de Polignac number, because 213011235 - 2¹ = 213011233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213011233) 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 31 ways as a sum of consecutive naturals, for example, 23290 + ... + 31119.

It is an arithmetic number, because the mean of its divisors is an integer number (12242250).

Almost surely, 2^213011235 is an apocalyptic number.

213011235 is a deficient number, since it is larger than the sum of its proper divisors (178740765).

213011235 is a wasteful number, since it uses less digits than its factorization.

213011235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54452 (or 54446 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 213011235 is about 14594.9044190087. The cubic root of 213011235 is about 597.2197620266.

Adding to 213011235 its reverse (532110312), we get a palindrome (745121547).

The spelling of 213011235 in words is "two hundred thirteen million, eleven thousand, two hundred thirty-five".