312002212231 has 4 divisors (see below), whose sum is σ = 312003864432. Its totient is φ = 312000560032.

The previous prime is 312002212201. The next prime is 312002212237. The reversal of 312002212231 is 132212200213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132212200213 = 23 ⋅5748356531.

It is a cyclic number.

It is not a de Polignac number, because 312002212231 - 2⁵ = 312002212199 is a prime.

It is a super-2 number, since 2×312002212231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312002212199 and 312002212208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312002212237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499906 + ... + 934831.

It is an arithmetic number, because the mean of its divisors is an integer number (78000966108).

Almost surely, 2^312002212231 is an apocalyptic number.

312002212231 is a deficient number, since it is larger than the sum of its proper divisors (1652201).

312002212231 is a wasteful number, since it uses less digits than its factorization.

312002212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652200.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 312002212231 its reverse (132212200213), we get a palindrome (444214412444).

The spelling of 312002212231 in words is "three hundred twelve billion, two million, two hundred twelve thousand, two hundred thirty-one".