212313312131023 has 4 divisors (see below), whose sum is σ = 212317634783560. Its totient is φ = 212308989478488.

The previous prime is 212313312131003. The next prime is 212313312131027. The reversal of 212313312131023 is 320131213313212.

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 212313312131023 - 2¹⁷ = 212313311999951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212313312130982 and 212313312131000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212313312131027) 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, 2161252593 + ... + 2161350826.

It is an arithmetic number, because the mean of its divisors is an integer number (53079408695890).

Almost surely, 2^{212313312131023} is an apocalyptic number.

212313312131023 is a deficient number, since it is larger than the sum of its proper divisors (4322652537).

212313312131023 is an equidigital number, since it uses as much as digits as its factorization.

212313312131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4322652536.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 212313312131023 its reverse (320131213313212), we get a palindrome (532444525444235).

The spelling of 212313312131023 in words is "two hundred twelve trillion, three hundred thirteen billion, three hundred twelve million, one hundred thirty-one thousand, twenty-three".