213111030303 has 48 divisors (see below), whose sum is σ = 329111640000. Its totient is φ = 132414704640.

The previous prime is 213111030263. The next prime is 213111030311. The reversal of 213111030303 is 303030111312.

It is a happy number.

213111030303 is a `hidden beast` number, since 21 + 311 + 1 + 0 + 30 + 303 = 666.

It is not a de Polignac number, because 213111030303 - 2¹² = 213111026207 is a prime.

It is a super-2 number, since 2×213111030303² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213111030383) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50012193 + ... + 50016453.

It is an arithmetic number, because the mean of its divisors is an integer number (6856492500).

Almost surely, 2^213111030303 is an apocalyptic number.

213111030303 is a deficient number, since it is larger than the sum of its proper divisors (116000609697).

213111030303 is a wasteful number, since it uses less digits than its factorization.

213111030303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7392 (or 7389 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 213111030303 its reverse (303030111312), we get a palindrome (516141141615).

The spelling of 213111030303 in words is "two hundred thirteen billion, one hundred eleven million, thirty thousand, three hundred three".