1321524352 has 16 divisors (see below), whose sum is σ = 2632724550. Its totient is φ = 660762112.

The previous prime is 1321524307. The next prime is 1321524353. The reversal of 1321524352 is 2534251231.

It can be written as a sum of positive squares in only one way, i.e., 1077414976 + 244109376 = 32824^2 + 15624^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×1321524352² = 3492853225858039808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1321524352.

It is not an unprimeable number, because it can be changed into a prime (1321524353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5162077 + ... + 5162332.

Almost surely, 2^1321524352 is an apocalyptic number.

It is an amenable number.

1321524352 is a deficient number, since it is larger than the sum of its proper divisors (1311200198).

1321524352 is an equidigital number, since it uses as much as digits as its factorization.

1321524352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10324423 (or 10324411 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 1321524352 is about 36352.7764001596. The cubic root of 1321524352 is about 1097.3834094525.

Adding to 1321524352 its reverse (2534251231), we get a palindrome (3855775583).

The spelling of 1321524352 in words is "one billion, three hundred twenty-one million, five hundred twenty-four thousand, three hundred fifty-two".