312120223311 has 16 divisors (see below), whose sum is σ = 450182383616. Its totient is φ = 191212659936.

The previous prime is 312120223297. The next prime is 312120223313. The reversal of 312120223311 is 113322021213.

It is not a de Polignac number, because 312120223311 - 2⁵ = 312120223279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312120223313) 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 15 ways as a sum of consecutive naturals, for example, 17935435 + ... + 17952828.

It is an arithmetic number, because the mean of its divisors is an integer number (28136398976).

Almost surely, 2^312120223311 is an apocalyptic number.

312120223311 is a deficient number, since it is larger than the sum of its proper divisors (138062160305).

312120223311 is a wasteful number, since it uses less digits than its factorization.

312120223311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35888502.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 312120223311 its reverse (113322021213), we get a palindrome (425442244524).

The spelling of 312120223311 in words is "three hundred twelve billion, one hundred twenty million, two hundred twenty-three thousand, three hundred eleven".