312403040133021 has 12 divisors (see below), whose sum is σ = 474998774471520. Its totient is φ = 197307183241800.

The previous prime is 312403040132947. The next prime is 312403040133029. The reversal of 312403040133021 is 120331040304213.

It is a happy number.

312403040133021 is a `hidden beast` number, since 3 + 1 + 2 + 4 + 0 + 304 + 0 + 1 + 330 + 21 = 666.

It is not a de Polignac number, because 312403040133021 - 2¹⁸ = 312403039870877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312403040133029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 913459181505 + ... + 913459181846.

It is an arithmetic number, because the mean of its divisors is an integer number (39583231205960).

Almost surely, 2^{312403040133021} is an apocalyptic number.

It is an amenable number.

312403040133021 is a deficient number, since it is larger than the sum of its proper divisors (162595734338499).

312403040133021 is a wasteful number, since it uses less digits than its factorization.

312403040133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826918363376 (or 1826918363373 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 312403040133021 its reverse (120331040304213), we get a palindrome (432734080437234).

The spelling of 312403040133021 in words is "three hundred twelve trillion, four hundred three billion, forty million, one hundred thirty-three thousand, twenty-one".