312211223133 has 8 divisors (see below), whose sum is σ = 417784453728. Its totient is φ = 207389403984.

The previous prime is 312211223081. The next prime is 312211223147. The reversal of 312211223133 is 331322112213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312211223133 - 2¹⁶ = 312211157597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312211223833) 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 7 ways as a sum of consecutive naturals, for example, 187851891 + ... + 187853552.

It is an arithmetic number, because the mean of its divisors is an integer number (52223056716).

Almost surely, 2^312211223133 is an apocalyptic number.

It is an amenable number.

312211223133 is a deficient number, since it is larger than the sum of its proper divisors (105573230595).

312211223133 is a wasteful number, since it uses less digits than its factorization.

312211223133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375705723.

The product of its digits is 1296, while the sum is 24.

Adding to 312211223133 its reverse (331322112213), we get a palindrome (643533335346).

The spelling of 312211223133 in words is "three hundred twelve billion, two hundred eleven million, two hundred twenty-three thousand, one hundred thirty-three".