213013233231 has 16 divisors (see below), whose sum is σ = 286562611200. Its totient is φ = 140738750208.

The previous prime is 213013233221. The next prime is 213013233299. The reversal of 213013233231 is 132332310312.

It is not a de Polignac number, because 213013233231 - 2²² = 213009038927 is a prime.

It is a super-2 number, since 2×213013233231² (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 (213013233221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53040 + ... + 654858.

It is an arithmetic number, because the mean of its divisors is an integer number (17910163200).

Almost surely, 2^213013233231 is an apocalyptic number.

213013233231 is a deficient number, since it is larger than the sum of its proper divisors (73549377969).

213013233231 is a wasteful number, since it uses less digits than its factorization.

213013233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602878.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 213013233231 its reverse (132332310312), we get a palindrome (345345543543).

The spelling of 213013233231 in words is "two hundred thirteen billion, thirteen million, two hundred thirty-three thousand, two hundred thirty-one".