211431424043 has 4 divisors (see below), whose sum is σ = 241635913200. Its totient is φ = 181226934888.

The previous prime is 211431424031. The next prime is 211431424093. The reversal of 211431424043 is 340424134112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211431424043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211431423997 and 211431424015.

It is not an unprimeable number, because it can be changed into a prime (211431424093) 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, 15102244568 + ... + 15102244581.

It is an arithmetic number, because the mean of its divisors is an integer number (60408978300).

Almost surely, 2^211431424043 is an apocalyptic number.

211431424043 is a deficient number, since it is larger than the sum of its proper divisors (30204489157).

211431424043 is an equidigital number, since it uses as much as digits as its factorization.

211431424043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30204489156.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 211431424043 its reverse (340424134112), we get a palindrome (551855558155).

The spelling of 211431424043 in words is "two hundred eleven billion, four hundred thirty-one million, four hundred twenty-four thousand, forty-three".