312143024440421 has 8 divisors (see below), whose sum is σ = 312189712447104. Its totient is φ = 312096337572240.

The previous prime is 312143024440409. The next prime is 312143024440517. The reversal of 312143024440421 is 124044420341213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312143024440421 - 2¹⁴ = 312143024424037 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 (312143024140421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661545416 + ... + 662017086.

It is an arithmetic number, because the mean of its divisors is an integer number (39023714055888).

Almost surely, 2^{312143024440421} is an apocalyptic number.

It is an amenable number.

312143024440421 is a deficient number, since it is larger than the sum of its proper divisors (46688006683).

312143024440421 is an equidigital number, since it uses as much as digits as its factorization.

312143024440421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569251.

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 312143024440421 its reverse (124044420341213), we get a palindrome (436187444781634).

The spelling of 312143024440421 in words is "three hundred twelve trillion, one hundred forty-three billion, twenty-four million, four hundred forty thousand, four hundred twenty-one".