231213411 has 96 divisors (see below), whose sum is σ = 418908672. Its totient is φ = 120890880.

The previous prime is 231213397. The next prime is 231213439. The reversal of 231213411 is 114312132.

231213411 is a `hidden beast` number, since 231 + 21 + 3 + 411 = 666.

It is not a de Polignac number, because 231213411 - 2¹¹ = 231211363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231213461) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2160820 + ... + 2160926.

It is an arithmetic number, because the mean of its divisors is an integer number (4363632).

Almost surely, 2^231213411 is an apocalyptic number.

231213411 is a deficient number, since it is larger than the sum of its proper divisors (187695261).

231213411 is a wasteful number, since it uses less digits than its factorization.

231213411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 230 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 231213411 is about 15205.7032392455. The cubic root of 231213411 is about 613.7681389965.

Adding to 231213411 its reverse (114312132), we get a palindrome (345525543).

The spelling of 231213411 in words is "two hundred thirty-one million, two hundred thirteen thousand, four hundred eleven".