211432242031 has 4 divisors (see below), whose sum is σ = 211792433832. Its totient is φ = 211072050232.

The previous prime is 211432242013. The next prime is 211432242097. The reversal of 211432242031 is 130242234112.

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 211432242031 - 2⁷ = 211432241903 is a prime.

It is a super-2 number, since 2×211432242031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211432241987 and 211432242005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211432249031) 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, 180095020 + ... + 180096193.

It is an arithmetic number, because the mean of its divisors is an integer number (52948108458).

Almost surely, 2^211432242031 is an apocalyptic number.

211432242031 is a deficient number, since it is larger than the sum of its proper divisors (360191801).

211432242031 is an equidigital number, since it uses as much as digits as its factorization.

211432242031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360191800.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 211432242031 its reverse (130242234112), we get a palindrome (341674476143).

The spelling of 211432242031 in words is "two hundred eleven billion, four hundred thirty-two million, two hundred forty-two thousand, thirty-one".