212102320031 has 16 divisors (see below), whose sum is σ = 243862724160. Its totient is φ = 180708675840.

The previous prime is 212102320007. The next prime is 212102320033. The reversal of 212102320031 is 130023201212.

212102320031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212102320031 - 2¹⁰ = 212102319007 is a prime.

It is a super-2 number, since 2×212102320031² (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 = 212102319991 and 212102320009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102320033) 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 15 ways as a sum of consecutive naturals, for example, 1402211 + ... + 1546091.

It is an arithmetic number, because the mean of its divisors is an integer number (15241420260).

Almost surely, 2^212102320031 is an apocalyptic number.

212102320031 is a deficient number, since it is larger than the sum of its proper divisors (31760404129).

212102320031 is a wasteful number, since it uses less digits than its factorization.

212102320031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145154.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212102320031 its reverse (130023201212), we get a palindrome (342125521243).

The spelling of 212102320031 in words is "two hundred twelve billion, one hundred two million, three hundred twenty thousand, thirty-one".