312161216463 has 12 divisors (see below), whose sum is σ = 451024381080. Its totient is φ = 208049856336.

The previous prime is 312161216459. The next prime is 312161216467. The reversal of 312161216463 is 364612161213.

312161216463 is a `hidden beast` number, since 3 + 1 + 2 + 1 + 6 + 1 + 2 + 1 + 646 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (312161216459) and next prime (312161216467).

It is not a de Polignac number, because 312161216463 - 2² = 312161216459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312161216467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4767453 + ... + 4832486.

It is an arithmetic number, because the mean of its divisors is an integer number (37585365090).

Almost surely, 2^312161216463 is an apocalyptic number.

312161216463 is a deficient number, since it is larger than the sum of its proper divisors (138863164617).

312161216463 is a wasteful number, since it uses less digits than its factorization.

312161216463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9603558 (or 9603555 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

Adding to 312161216463 its reverse (364612161213), we get a palindrome (676773377676).

The spelling of 312161216463 in words is "three hundred twelve billion, one hundred sixty-one million, two hundred sixteen thousand, four hundred sixty-three".