213320132018 has 24 divisors (see below), whose sum is σ = 372261815964. Its totient is φ = 91413100800.

The previous prime is 213320132017. The next prime is 213320132021. The reversal of 213320132018 is 810231023312.

It can be written as a sum of positive squares in 2 ways, for example, as 208051840129 + 5268291889 = 456127^2 + 72583^2 .

It is not an unprimeable number, because it can be changed into a prime (213320132017) 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, 840698 + ... + 1064618.

Almost surely, 2^213320132018 is an apocalyptic number.

213320132018 is a deficient number, since it is larger than the sum of its proper divisors (158941683946).

213320132018 is a wasteful number, since it uses less digits than its factorization.

213320132018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233658 (or 233651 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 213320132018 in words is "two hundred thirteen billion, three hundred twenty million, one hundred thirty-two thousand, eighteen".