212020312323 has 4 divisors (see below), whose sum is σ = 282693749768. Its totient is φ = 141346874880.

The previous prime is 212020312277. The next prime is 212020312349. The reversal of 212020312323 is 323213020212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 212020312323 - 2¹⁶ = 212020246787 is a prime.

It is a super-2 number, since 2×212020312323² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212020312323.

It is not an unprimeable number, because it can be changed into a prime (212020312363) 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, 35336718718 + ... + 35336718723.

It is an arithmetic number, because the mean of its divisors is an integer number (70673437442).

Almost surely, 2^212020312323 is an apocalyptic number.

212020312323 is a deficient number, since it is larger than the sum of its proper divisors (70673437445).

212020312323 is an equidigital number, since it uses as much as digits as its factorization.

212020312323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70673437444.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 212020312323 its reverse (323213020212), we get a palindrome (535233332535).

The spelling of 212020312323 in words is "two hundred twelve billion, twenty million, three hundred twelve thousand, three hundred twenty-three".