212131312223 has 2 divisors, whose sum is σ = 212131312224. Its totient is φ = 212131312222.

The previous prime is 212131312199. The next prime is 212131312241. The reversal of 212131312223 is 322213131212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212131312223 - 2¹⁶ = 212131246687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212181312223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106065656111 + 106065656112.

It is an arithmetic number, because the mean of its divisors is an integer number (106065656112).

Almost surely, 2^212131312223 is an apocalyptic number.

212131312223 is a deficient number, since it is larger than the sum of its proper divisors (1).

212131312223 is an equidigital number, since it uses as much as digits as its factorization.

212131312223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

Adding to 212131312223 its reverse (322213131212), we get a palindrome (534344443435).

The spelling of 212131312223 in words is "two hundred twelve billion, one hundred thirty-one million, three hundred twelve thousand, two hundred twenty-three".