1321523463 has 8 divisors (see below), whose sum is σ = 1897572208. Its totient is φ = 813245184.

The previous prime is 1321523447. The next prime is 1321523503. The reversal of 1321523463 is 3643251231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321523463 - 2⁴ = 1321523447 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 1321523463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321523263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16942570 + ... + 16942647.

It is an arithmetic number, because the mean of its divisors is an integer number (237196526).

Almost surely, 2^1321523463 is an apocalyptic number.

1321523463 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1321523463 is a deficient number, since it is larger than the sum of its proper divisors (576048745).

1321523463 is a wasteful number, since it uses less digits than its factorization.

1321523463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33885233.

The product of its digits is 12960, while the sum is 30.

The square root of 1321523463 is about 36352.7641727558. The cubic root of 1321523463 is about 1097.3831633796.

Adding to 1321523463 its reverse (3643251231), we get a palindrome (4964774694).

The spelling of 1321523463 in words is "one billion, three hundred twenty-one million, five hundred twenty-three thousand, four hundred sixty-three".