105231354212 has 12 divisors (see below), whose sum is σ = 185844364860. Its totient is φ = 52132964256.

The previous prime is 105231354211. The next prime is 105231354227. The reversal of 105231354212 is 212453132501.

It can be written as a sum of positive squares in 2 ways, for example, as 83050017856 + 22181336356 = 288184^2 + 148934^2 .

It is a super-2 number, since 2×105231354212² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105231354211) 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, 120677723 + ... + 120678594.

It is an arithmetic number, because the mean of its divisors is an integer number (15487030405).

Almost surely, 2^105231354212 is an apocalyptic number.

It is an amenable number.

105231354212 is a deficient number, since it is larger than the sum of its proper divisors (80613010648).

105231354212 is a wasteful number, since it uses less digits than its factorization.

105231354212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241356430 (or 241356428 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 105231354212 its reverse (212453132501), we get a palindrome (317684486713).

The spelling of 105231354212 in words is "one hundred five billion, two hundred thirty-one million, three hundred fifty-four thousand, two hundred twelve".