212031231223 has 8 divisors (see below), whose sum is σ = 242331390848. Its totient is φ = 181733567544.

The previous prime is 212031231173. The next prime is 212031231233. The reversal of 212031231223 is 322132130212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212031231223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212031231194 and 212031231203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212031231233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438261 + ... + 784942.

It is an arithmetic number, because the mean of its divisors is an integer number (30291423856).

Almost surely, 2^212031231223 is an apocalyptic number.

212031231223 is a deficient number, since it is larger than the sum of its proper divisors (30300159625).

212031231223 is a wasteful number, since it uses less digits than its factorization.

212031231223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247973.

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

Adding to 212031231223 its reverse (322132130212), we get a palindrome (534163361435).

The spelling of 212031231223 in words is "two hundred twelve billion, thirty-one million, two hundred thirty-one thousand, two hundred twenty-three".