312643021463 has 4 divisors (see below), whose sum is σ = 319913789448. Its totient is φ = 305372253480.

The previous prime is 312643021441. The next prime is 312643021469. The reversal of 312643021463 is 364120346213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 364120346213 = 13 ⋅28009257401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312643021463 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 (312643021469) 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, 3635383928 + ... + 3635384013.

It is an arithmetic number, because the mean of its divisors is an integer number (79978447362).

Almost surely, 2^312643021463 is an apocalyptic number.

312643021463 is a deficient number, since it is larger than the sum of its proper divisors (7270767985).

312643021463 is an equidigital number, since it uses as much as digits as its factorization.

312643021463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7270767984.

The product of its (nonzero) digits is 62208, while the sum is 35.

Adding to 312643021463 its reverse (364120346213), we get a palindrome (676763367676).

The spelling of 312643021463 in words is "three hundred twelve billion, six hundred forty-three million, twenty-one thousand, four hundred sixty-three".