211332321031 has 4 divisors (see below), whose sum is σ = 227588653432. Its totient is φ = 195075988632.

The previous prime is 211332320993. The next prime is 211332321071. The reversal of 211332321031 is 130123233112.

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 211332321031 - 2¹³ = 211332312839 is a prime.

It is a super-2 number, since 2×211332321031² (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 = 211332320993 and 211332321011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211332321071) 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, 8128166181 + ... + 8128166206.

It is an arithmetic number, because the mean of its divisors is an integer number (56897163358).

Almost surely, 2^211332321031 is an apocalyptic number.

211332321031 is a deficient number, since it is larger than the sum of its proper divisors (16256332401).

211332321031 is a wasteful number, since it uses less digits than its factorization.

211332321031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16256332400.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 211332321031 its reverse (130123233112), we get a palindrome (341455554143).

The spelling of 211332321031 in words is "two hundred eleven billion, three hundred thirty-two million, three hundred twenty-one thousand, thirty-one".