211234214431 has 4 divisors (see below), whose sum is σ = 212235324664. Its totient is φ = 210233104200.

The previous prime is 211234214419. The next prime is 211234214447. The reversal of 211234214431 is 134412432112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211234214431 - 2³⁵ = 176874476063 is a prime.

It is a super-2 number, since 2×211234214431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211234214431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211234215431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500554800 + ... + 500555221.

It is an arithmetic number, because the mean of its divisors is an integer number (53058831166).

Almost surely, 2^211234214431 is an apocalyptic number.

211234214431 is a deficient number, since it is larger than the sum of its proper divisors (1001110233).

211234214431 is a wasteful number, since it uses less digits than its factorization.

211234214431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001110232.

The product of its digits is 4608, while the sum is 28.

Adding to 211234214431 its reverse (134412432112), we get a palindrome (345646646543).

The spelling of 211234214431 in words is "two hundred eleven billion, two hundred thirty-four million, two hundred fourteen thousand, four hundred thirty-one".