312000400233221 has 32 divisors (see below), whose sum is σ = 364762353215232. Its totient is φ = 261343135272960.

The previous prime is 312000400233187. The next prime is 312000400233257. The reversal of 312000400233221 is 122332004000213.

It is a cyclic number.

It is not a de Polignac number, because 312000400233221 - 2⁴⁶ = 241631656055557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312000400233271) 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 31 ways as a sum of consecutive naturals, for example, 682027250 + ... + 682484556.

It is an arithmetic number, because the mean of its divisors is an integer number (11398823537976).

Almost surely, 2^{312000400233221} is an apocalyptic number.

It is an amenable number.

312000400233221 is a deficient number, since it is larger than the sum of its proper divisors (52761952982011).

312000400233221 is a wasteful number, since it uses less digits than its factorization.

312000400233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467709.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 312000400233221 its reverse (122332004000213), we get a palindrome (434332404233434).

The spelling of 312000400233221 in words is "three hundred twelve trillion, four hundred million, two hundred thirty-three thousand, two hundred twenty-one".