213507011 has 4 divisors (see below), whose sum is σ = 216514224. Its totient is φ = 210499800.

The previous prime is 213507001. The next prime is 213507023. The reversal of 213507011 is 110705312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213507011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213507001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1503500 + ... + 1503641.

It is an arithmetic number, because the mean of its divisors is an integer number (54128556).

Almost surely, 2^213507011 is an apocalyptic number.

213507011 is a deficient number, since it is larger than the sum of its proper divisors (3007213).

213507011 is an equidigital number, since it uses as much as digits as its factorization.

213507011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007212.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 213507011 is about 14611.8791057140. The cubic root of 213507011 is about 597.6827388746.

The spelling of 213507011 in words is "two hundred thirteen million, five hundred seven thousand, eleven".