1321163463 has 4 divisors (see below), whose sum is σ = 1761551288. Its totient is φ = 880775640.

The previous prime is 1321163453. The next prime is 1321163471. The reversal of 1321163463 is 3643611231.

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

It is not a de Polignac number, because 1321163463 - 2⁶ = 1321163399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321163463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321163413) 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, 220193908 + ... + 220193913.

It is an arithmetic number, because the mean of its divisors is an integer number (440387822).

Almost surely, 2^1321163463 is an apocalyptic number.

1321163463 is a deficient number, since it is larger than the sum of its proper divisors (440387825).

1321163463 is an equidigital number, since it uses as much as digits as its factorization.

1321163463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440387824.

The product of its digits is 7776, while the sum is 30.

The square root of 1321163463 is about 36347.8123550785. The cubic root of 1321163463 is about 1097.2835072306.

Adding to 1321163463 its reverse (3643611231), we get a palindrome (4964774694).

The spelling of 1321163463 in words is "one billion, three hundred twenty-one million, one hundred sixty-three thousand, four hundred sixty-three".