211434034431 has 16 divisors (see below), whose sum is σ = 306562545504. Its totient is φ = 129078964224.

The previous prime is 211434034423. The next prime is 211434034433. The reversal of 211434034431 is 134430434112.

It is not a de Polignac number, because 211434034431 - 2³ = 211434034423 is a prime.

It is a super-2 number, since 2×211434034431² (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 (211434034433) 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 15 ways as a sum of consecutive naturals, for example, 56021970 + ... + 56025743.

It is an arithmetic number, because the mean of its divisors is an integer number (19160159094).

Almost surely, 2^211434034431 is an apocalyptic number.

211434034431 is a deficient number, since it is larger than the sum of its proper divisors (95128511073).

211434034431 is a wasteful number, since it uses less digits than its factorization.

211434034431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112047770.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 211434034431 its reverse (134430434112), we get a palindrome (345864468543).

The spelling of 211434034431 in words is "two hundred eleven billion, four hundred thirty-four million, thirty-four thousand, four hundred thirty-one".