312001120031223 has 16 divisors (see below), whose sum is σ = 475430757320960. Its totient is φ = 178286174611776.

The previous prime is 312001120031221. The next prime is 312001120031297. The reversal of 312001120031223 is 322130021100213.

It is not a de Polignac number, because 312001120031223 - 2¹ = 312001120031221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 312001120031223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312001120031221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15483636 + ... + 29389542.

It is an arithmetic number, because the mean of its divisors is an integer number (29714422332560).

Almost surely, 2^{312001120031223} is an apocalyptic number.

312001120031223 is a deficient number, since it is larger than the sum of its proper divisors (163429637289737).

312001120031223 is a wasteful number, since it uses less digits than its factorization.

312001120031223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14974326.

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

Adding to 312001120031223 its reverse (322130021100213), we get a palindrome (634131141131436).

The spelling of 312001120031223 in words is "three hundred twelve trillion, one billion, one hundred twenty million, thirty-one thousand, two hundred twenty-three".