312212330213 has 32 divisors (see below), whose sum is σ = 378895055616. Its totient is φ = 251141971968.

The previous prime is 312212330167. The next prime is 312212330231. The reversal of 312212330213 is 312033212213.

It is a cyclic number.

It is not a de Polignac number, because 312212330213 - 2¹⁰ = 312212329189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312212330263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72893570 + ... + 72897852.

It is an arithmetic number, because the mean of its divisors is an integer number (11840470488).

Almost surely, 2^312212330213 is an apocalyptic number.

It is an amenable number.

312212330213 is a deficient number, since it is larger than the sum of its proper divisors (66682725403).

312212330213 is a wasteful number, since it uses less digits than its factorization.

312212330213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5933.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 312212330213 its reverse (312033212213), we get a palindrome (624245542426).

The spelling of 312212330213 in words is "three hundred twelve billion, two hundred twelve million, three hundred thirty thousand, two hundred thirteen".