212103232231 has 4 divisors (see below), whose sum is σ = 231385344264. Its totient is φ = 192821120200.

The previous prime is 212103232151. The next prime is 212103232259. The reversal of 212103232231 is 132232301212.

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 212103232231 - 2²¹ = 212101135079 is a prime.

It is a super-2 number, since 2×212103232231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212103232531) 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, 9641056000 + ... + 9641056021.

It is an arithmetic number, because the mean of its divisors is an integer number (57846336066).

Almost surely, 2^212103232231 is an apocalyptic number.

212103232231 is a deficient number, since it is larger than the sum of its proper divisors (19282112033).

212103232231 is a wasteful number, since it uses less digits than its factorization.

212103232231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19282112032.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 212103232231 its reverse (132232301212), we get a palindrome (344335533443).

The spelling of 212103232231 in words is "two hundred twelve billion, one hundred three million, two hundred thirty-two thousand, two hundred thirty-one".