213211112431 has 8 divisors (see below), whose sum is σ = 226550661264. Its totient is φ = 199960199040.

The previous prime is 213211112419. The next prime is 213211112447. The reversal of 213211112431 is 134211112312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213211112431 - 2³⁵ = 178851374063 is a prime.

It is a super-2 number, since 2×213211112431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213211112461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22153900 + ... + 22163521.

It is an arithmetic number, because the mean of its divisors is an integer number (28318832658).

Almost surely, 2^213211112431 is an apocalyptic number.

213211112431 is a deficient number, since it is larger than the sum of its proper divisors (13339548833).

213211112431 is a wasteful number, since it uses less digits than its factorization.

213211112431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44317721.

The product of its digits is 288, while the sum is 22.

Adding to 213211112431 its reverse (134211112312), we get a palindrome (347422224743).

The spelling of 213211112431 in words is "two hundred thirteen billion, two hundred eleven million, one hundred twelve thousand, four hundred thirty-one".