312323212213 has 4 divisors (see below), whose sum is σ = 312324405568. Its totient is φ = 312322018860.

The previous prime is 312323212153. The next prime is 312323212217. The reversal of 312323212213 is 312212323213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 312323212213 - 2¹⁷ = 312323081141 is a prime.

It is a super-3 number, since 3×312323212213³ (a number of 35 digits) contains 333 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 (312323212217) 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, 15231 + ... + 790492.

It is an arithmetic number, because the mean of its divisors is an integer number (78081101392).

Almost surely, 2^312323212213 is an apocalyptic number.

It is an amenable number.

312323212213 is a deficient number, since it is larger than the sum of its proper divisors (1193355).

312323212213 is an equidigital number, since it uses as much as digits as its factorization.

312323212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193354.

The product of its digits is 2592, while the sum is 25.

Adding to 312323212213 its reverse (312212323213), we get a palindrome (624535535426).

The spelling of 312323212213 in words is "three hundred twelve billion, three hundred twenty-three million, two hundred twelve thousand, two hundred thirteen".