312013322313421 has 4 divisors (see below), whose sum is σ = 312013573655644. Its totient is φ = 312013070971200.

The previous prime is 312013322313419. The next prime is 312013322313461. The reversal of 312013322313421 is 124313223310213.

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 170398300468900 + 141615021844521 = 13053670^2 + 11900211^2 .

It is a cyclic number.

It is not a de Polignac number, because 312013322313421 - 2¹ = 312013322313419 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 (312013322313461) 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, 123799740 + ... + 126294901.

It is an arithmetic number, because the mean of its divisors is an integer number (78003393413911).

Almost surely, 2^{312013322313421} is an apocalyptic number.

It is an amenable number.

312013322313421 is a deficient number, since it is larger than the sum of its proper divisors (251342223).

312013322313421 is a wasteful number, since it uses less digits than its factorization.

312013322313421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251342222.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 312013322313421 its reverse (124313223310213), we get a palindrome (436326545623634).

The spelling of 312013322313421 in words is "three hundred twelve trillion, thirteen billion, three hundred twenty-two million, three hundred thirteen thousand, four hundred twenty-one".