312403034311421 has 16 divisors (see below), whose sum is σ = 329023093521600. Its totient is φ = 295800766829568.

The previous prime is 312403034311301. The next prime is 312403034311447. The reversal of 312403034311421 is 124113430304213.

It is a cyclic number.

It is not a de Polignac number, because 312403034311421 - 2³⁴ = 312385854442237 is a prime.

It is a super-2 number, since 2×312403034311421² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312403034313421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 996061295 + ... + 996374883.

It is an arithmetic number, because the mean of its divisors is an integer number (20563943345100).

Almost surely, 2^{312403034311421} is an apocalyptic number.

It is an amenable number.

312403034311421 is a deficient number, since it is larger than the sum of its proper divisors (16620059210179).

312403034311421 is a wasteful number, since it uses less digits than its factorization.

312403034311421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341788.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 312403034311421 its reverse (124113430304213), we get a palindrome (436516464615634).

The spelling of 312403034311421 in words is "three hundred twelve trillion, four hundred three billion, thirty-four million, three hundred eleven thousand, four hundred twenty-one".