312404411044421 has 4 divisors (see below), whose sum is σ = 315270506558700. Its totient is φ = 309538315530144.

The previous prime is 312404411044387. The next prime is 312404411044529. The reversal of 312404411044421 is 124440114404213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 242295841881025 + 70108569163396 = 15565855^2 + 8373086^2 .

It is a cyclic number.

It is not a de Polignac number, because 312404411044421 - 2¹⁰ = 312404411043397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312404411046421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1433047756976 + ... + 1433047757193.

It is an arithmetic number, because the mean of its divisors is an integer number (78817626639675).

Almost surely, 2^{312404411044421} is an apocalyptic number.

It is an amenable number.

312404411044421 is a deficient number, since it is larger than the sum of its proper divisors (2866095514279).

312404411044421 is a wasteful number, since it uses less digits than its factorization.

312404411044421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866095514278.

The product of its (nonzero) digits is 49152, while the sum is 35.

Adding to 312404411044421 its reverse (124440114404213), we get a palindrome (436844525448634).

The spelling of 312404411044421 in words is "three hundred twelve trillion, four hundred four billion, four hundred eleven million, forty-four thousand, four hundred twenty-one".