312404132223121 has 16 divisors (see below), whose sum is σ = 326035078389504. Its totient is φ = 298777202817984.

The previous prime is 312404132223023. The next prime is 312404132223133. The reversal of 312404132223121 is 121322231404213.

It is a cyclic number.

It is not a de Polignac number, because 312404132223121 - 2¹³ = 312404132214929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312404132223721) 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, 7451123460 + ... + 7451165386.

It is an arithmetic number, because the mean of its divisors is an integer number (20377192399344).

Almost surely, 2^{312404132223121} is an apocalyptic number.

It is an amenable number.

312404132223121 is a deficient number, since it is larger than the sum of its proper divisors (13630946166383).

312404132223121 is a wasteful number, since it uses less digits than its factorization.

312404132223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82080.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 312404132223121 its reverse (121322231404213), we get a palindrome (433726363627334).

The spelling of 312404132223121 in words is "three hundred twelve trillion, four hundred four billion, one hundred thirty-two million, two hundred twenty-three thousand, one hundred twenty-one".