312381128463 has 4 divisors (see below), whose sum is σ = 416508171288. Its totient is φ = 208254085640.

The previous prime is 312381128459. The next prime is 312381128467. The reversal of 312381128463 is 364821183213.

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

It is an interprime number because it is at equal distance from previous prime (312381128459) and next prime (312381128467).

It is a cyclic number.

It is not a de Polignac number, because 312381128463 - 2² = 312381128459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312381128467) 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, 52063521408 + ... + 52063521413.

It is an arithmetic number, because the mean of its divisors is an integer number (104127042822).

Almost surely, 2^312381128463 is an apocalyptic number.

312381128463 is a deficient number, since it is larger than the sum of its proper divisors (104127042825).

312381128463 is a wasteful number, since it uses less digits than its factorization.

312381128463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104127042824.

The product of its digits is 165888, while the sum is 42.

The spelling of 312381128463 in words is "three hundred twelve billion, three hundred eighty-one million, one hundred twenty-eight thousand, four hundred sixty-three".