211131120431 has 8 divisors (see below), whose sum is σ = 263228409984. Its totient is φ = 164517756120.

The previous prime is 211131120383. The next prime is 211131120439. The reversal of 211131120431 is 134021131112.

211131120431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 211131120431 - 2¹⁴ = 211131104047 is a prime.

It is a super-2 number, since 2×211131120431² (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 (211131120439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1370981225 + ... + 1370981378.

It is an arithmetic number, because the mean of its divisors is an integer number (32903551248).

Almost surely, 2^211131120431 is an apocalyptic number.

211131120431 is a deficient number, since it is larger than the sum of its proper divisors (52097289553).

211131120431 is a wasteful number, since it uses less digits than its factorization.

211131120431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741962621.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 211131120431 its reverse (134021131112), we get a palindrome (345152251543).

The spelling of 211131120431 in words is "two hundred eleven billion, one hundred thirty-one million, one hundred twenty thousand, four hundred thirty-one".